bluuebunny/crossref_metadata_2025 huggingface dataset:
Consumer Acceptance of Spicy Fried Dry Potato and Shrimp Sambal for Condiments Instant Uduk Rice
Authors: Suwardiah Dwi Kristiastuti , Lukitasari Febriani
Published: November 2019

Spicy fried dry potato and shrimp sambal (chili sauce) is made as the instant uduk rice condiment. It is expected that taste, flavour and nutritional product of instant uduk rice will be better and can increase the economic value of the product. The purpose of this research: 1) to know consumer acceptance of spicy fried dry potato and shrimp sambal (chili sauce); and 2) to know consumer acceptance of spicy fried dry potato and shrimp sambal as a condiment of uduk rice. Research methods such as design experimental and observational of the product by the number of panellists 100 people. The results showed that: 1) consumer acceptance of spicy fried dry potato and shrimp sambal both in terms of taste, aroma, texture, colour and preference obtained very like with an average score of 3.52 out of 4; 2) while the results of consumer acceptance of spicy fried dry potato and shrimp sambal as an instant uduk rice condiment obtained very like with an average score of 3.51. It was concluded that spicy fried dry potato and shrimp sambal deserved to be a condiment for instant uduk rice.
Optimization of Ganyong Starch (Canna edulis) on Making of Dry and Instant Noodles
Authors: Handajani Sri , Pangesthi Lucia Tri
Published: November 2019

Ganyong (Canna edulis) noodle is one of the diversified products of composite starch-based carbohydrate from ganyong starch and wheat flour. This research aims to determine the effect proportion of wheat flour and ganyong starch to the organoleptic quality of: (1) dry and instant noodles; (2) dried and instant boiled noodles. The data of this experimental research was analysed by Friedman test. The results show that: (1) There was no effect of composite flour to the shape, flavour and colour of dry noodles and there was influence of the use of composite flour on dried instant noodles; (2) There was influence of the proportion of wheat and starch composite flour to form, and there was no effect on the elasticity, shape, colour, flavour, taste and likes of instant noodles in boiled form. This research supports government policy in order to accelerate diversification of food consumption based on local resources.
Role of compost derived from rice straw and tithonia in improving chemical fertility of Regosol on onion cultivation
Authors: Gusnidar Gusnidar , Fitria Febria , Maira Lusi , Yulnafatmawita Yulnafatmawita
Published: November 2019

Regosol, a suboptimal land, is rarely cultivated due to its low water retention and nutrient content. It is needed organic matter to improve the soil physical, chemical, and biological properties. A research conducted in glasshouse and soil laboratory was aimed to find out the best dosses of compost derived from rice straw and tithonia to improve soil chemical properties of Regosol as well as onion production. There were 9 levels of compost dosses (0; 2.5; 5.0; 7.5; 10.0; 12.5; 15.0; 17.5; and 20.0 tonha-1) applied to soil with three replications. The experimental units were allocated based on Completely Randomized Design (CRD). Crop data resulted were statistically analyzed using F-test and then continued using Least Significance Difference (LSD) at 5% level of significance if F-calculated > F-table. The result showed that compost application up to 20 ton ha-1 did not significantly affect chemical properties of Regosol as well as onion production. The highest weight of onion bulb was found at application of 7.5 t compost ha-1, however the highest N, P, and K uptake was found at dosses 20 t compost/ha-1. Therefore, it was needed further study to determine the appropriate compost dosses for optimal onion production in Regosol.
Hygiene and Sanitation of Pindang Processing in Central of Pemindangan, Bali
Authors: Permatananda P. A. N.K. , Pandit I. G.S , Irianto I K.
Published: November 2019

Food and beverage hygiene is an effort to control the factors of places, equipment, people and foods that may cause health problems and food poisoning, including fish. Fish is a food that is widely consumed by the public, but on the other hand, fish experience the process of decay faster. In order to inhibit decay and increase product diversity, the villagers of Kusamba in Bali conduct a traditional fish processing, that’s called pemindangan. The raw material of pindang is usually the fishes that fall under the biological family scromboidae and that are very easy to decay due to high of protein content and environmental conditions. Pindang is a traditional product that is highly favored by the people of Bali because of its unique taste, so that hygiene and sanitation in its processing is needed to prevent the occurrence of fish poisoning. This study was a descriptive survey in order to get an description the state of the hygiene and sanitation behavior in the fish processing of central pemindangan in Bali and our effort to increase the hygiene and sanitation there. We found that some variables of hygiene and sanitation in central pemindangan of Kusamba were not eligible with the principles of hygiene and sanitation stated to the regulation of Sea Food HACCP, especially for the physical facilities and infrastructure. For the fisherman, we also found that they didn’t have good knowledge about hygiene and sanitation. Next time, we hope that there will be a comprehensive intervention related to infrastructure which will eventually affect the quality of pindang.
Dynamics of Peasants’ Household Rice Consumption in Central Java
Authors: Rusdiyana E. , Agustono  , Antriyandarti E. , Ani S.W.
Published: November 2019

This research aimed to discover the dynamics and the peasants’ household rice consumption pattern in Central Java. This research employed a qualitative approach, with the interview and focus group discussion being the techniques of data collection. The research location was selected purposely by taking two regencies constituting the main rice production centers in Central Java: Grobogan and Cilacap. The results show that peasants’ household rice consumption pattern in Central Java was affected by the unhulled rice price, planting pattern, and profit-sharing system. The unhulled rice price affected planting pattern because when the unhulled rice price was low or predicted to be lower in the next harvest season, the rice-rice-rice planting pattern would change torice-rice-palawija (secondary crop). Rice would be stored as consumption reserve and marketed gradually as the price increased gradually. If the price condition increased, rice would be marketed by taking the reserve for household consumption. Farmers had a local principle that “rice is a source of life;selling rice means selling the life.” Local wisdom of profit sharing, such as “maro”,“bawon”, “pemajek”, “mrapat”, and “mrotelu”, to areas, the populations of which were tenant farmers, ensured that the rice consumption could be fulfilled through the profit-sharing system.
The Influence of Forest Ecosystems to Ant Community on Smallholder Oil Palm Plantations at Dharmasraya Regency, West Sumatera Indonesia
Authors: Yaherwandi  , Herwina Henny , Busniah Munzir , Effendi Siska , Hasan dan Arlen
Published: November 2019

Forests are natural ecosystems and changes from these ecosystems will affect the organisms that inhabit them. The ant community (Hymenoptera: Formicidae) is one group of insects that inhabit various ecosystems and is very interesting to learn. The research aimed to study the ant community diversity in palm oil plantation in border of forest. The research was conducted in Gunung Selasih and Sungai Kambut, Dharmasraya Regency, West Sumatera from November 2017-January 2018. The research was formed in survey and Purposive Random Sampling was used to determine study sites. Method of ants collecting used hand collecting, bait trap, and pitfall trap. Samplings identification were conducted in Animal Taxonomy Laboratory, Department of Biology, Faculty of Math and Science, Andalas University. Total of ants collected 3.046 individual consisted of 5 sub-family, 15 genus and 29 species. The results of this research showed that forest ecosystems did not affect the abundance and a diversity of ant community in oil palm plantations.Anoplolepis graciliphes, Odontoponeradenticulate andOdontomachus simillimuswere the dominant species found in oil palm plantations in Dharmasraya Regency, West Sumatra.
The Study of Waste Generation and Composition in Lubuk Alung Market in Padang Pariaman Regency
Authors: Candrianto  , Ningsih Radna , Seprimon
Published: November 2019

This study aims to determine the generation and composition of the Lubuk Alung market waste, Padang Pariaman regency, West Sumatra. The research problem is the pile of garbage behind and beside the market that causes unpleasant odours and aromas due to the lack of optimal waste management. Determination of market waste generation refers to Indonesian National Standard (SNI 19-3964-1994) as stated in units of weight (kilograms / person / day) and in units of volume (liters / person / day). Market waste composition includes waste from meat stalls, fruit and vegetable kiosks, gold shops, clothing and shoe stores, restaurant, daily needs shops, household appliance kiosks, electronic stores and stationary stores. This type of research is quantitative research with a descriptive approach. The research sample is market waste taken as much as 10% of the total number of facilities (at least 1) available on the market with a total sample of 9 pieces.. From the results of the research obtained waste generation in the Lubuk Alung market in weight units found that the average is 0.241 kg / m2 / h or 0.053 kg / person / h while the generation in volume units is 1.678 liters / m2h or 0.326 litre / person / h while for the average value of solid waste generation is 12,325 m3 / day, while the average waste composition of Lubuk Alung market is dominated by organic waste (vegetable and fruit waste, fish, chicken, meat and meat) of 75.18% while inorganic waste (plastic waste, canned waste and glass) is 24.81%.
Development of Buffalo Caring System from Various Maintenance Pattern
Authors: Harly Resolinda
Published: November 2019

Indonesia has not been able to meet meat needs so it still imports both in the form of meat and in the form of livestock. One of the germplasm that must get attention and can be developed is buffalo. Three forms of maintenance patterns for buffaloes in Indonesia, namely; 1). The extensive system of buffalo livestock is released in the wild without any touch from humans, breeding naturally, 2). The semi-intensive system is livestock grazed during the day and at night tethered near the house or caged and 3). The intensive system where all day long cattle are stocked with all the livestock needs provided. The study was carried out in the Lubuk Duku Nagari Lalan buffalo livestock group, Lubuak Tarok District, Sijunjung District. Indonesia. The study found that there are three patterns of maintenance of buffaloes, the second pattern of maintenance is the most dominant practices. In the second system, groups were formed at the initiative of farmers, through group counseling and training. It can be concluded that livestock groups can be improved the way of maintenance, feeding, management and so forth. With the existence of a solid group, maximum monitoring can be carried out by livestock development through breeding by farmers. The result shows that farmer can improve the population of buffalo by 6.36 % per year if they are provided with local government support in managing the caring system.
How Important CSR to Mining Companies: Empirical Case in Indonesia
Authors: Sari SRK , Setiahadi R
Published: November 2019

The role of CSR is crucial to building a company’s brand strategy, especially companies that exploit natural resources. Branding is crucial for products and services sold in big consumer markets. It’s also important because it helps companies stand out from the competition. The brand strategy brings competitive positioning to life and works position as specific “something” in the mind of customers. The purpose of this paper is to describe the nature and trend of nonfinancial disclosure corporate social responsibility (CSR) practices in Indonesia. The sample of the study consist of annual report of the mining companies listed at Indonesia Stock Exchange during 2015-2017. CSR indexes and financial performance measures were computed for content analysis. This research result shows that 39 mining companies in Indonesia globally do CSR on their companies, but not all of the company’s CSR activities are disclosed in the nonfinancial report. The disclosure level of CRS in mining company is many as 0,3303. This happens because the company reporting on social responsibility and also identify the advantages they have gained through disclosing their social responsibility activities to stakeholders. Which complete information is the foundation for stakeholders to determine the decisions related to the company. The conclusion of the analysis of mining company CSR report disclosed in the annual report of the company can conclude that there are three reasons why a company conducts CSR, among others: The company complies with national policies; Minimizing social, economic, political and environmental impacts; and Value Creation.
Effect of Farmers Managed Extension Activities (FMA) on Changes in Farmers’ Behavior in Panyakalan, Kubung Sub-district, Solok Regency
Authors: Afrini D. , Astuti T.
Published: November 2019

This study aims to analyze the effect of the Farmers Managed Extension Activities (FMA) method on changes in farmer behavior between before and after the existence of the FMA method in Panyakalan, Kubung District, Solok Regency. The research method used is a case study method using 55 samples which are determined based on certain criteria and using qualitative descriptive analysis. The focus of this research is to analyze changes in farmer behavior between after and before FMA learning which are seen from changes in farmer orientation about markets, economical business scale, habits of protecting agreements with contract partners based on contracts, building networks between farmer organizations and farmers who have more knowledge becomes a resource for farmers who have lower knowledge. This study found that the implementation of the FMA method (Farmer‘s Managed Extension Activities) in which extension activities managed by farmers influence the behavior of the community in Panyakalan District Kubung Solok Regency can be seen from the conditions of farmers who conduct their traditional and subsistence farming into farmers who have applied the principles agribusiness through continuous learning with a learning-by-doing approach (learning by doing) and carrying out technological innovation-based agribusiness learning activities.
Farmers Motivation to Raising Cow on Bali Cattle Breeding Business (Case Study at Pelaga Village, Petang District, Badung Regency)
Authors: Sanjaya I Gusti Agus Maha Putra , Suparta Nyoman
Published: November 2019

The aims of this study were to 1) analyze the motivation of farmers to raising cow on Bali cattle breeding business; 2) analyzing the influence of age, formal education, number of cattle ownership, knowledge, attitude, intensity of communication on the motivation of farmers to raising cow on Bali cattle breeding business. Structured questionnaires were used to obtain information from 20 respondents who are all members of Lila Mukti Livestock Farmers Group by census method. This study was conducted in May-June 2018 at Banjar Bukit Munduk Tiying, Pelaga Village, Petang District, Badung Regency, Bali Province. Data were analyzed descriptively and multiple linear regression analysis. The results showed: 1) The motivation of farmers to raising cow on Bali cattle breeding business is strong (score 80.80% from ideal maximum score 25); 2) The effect of the independent variable to dependent variable simultaneously is 92.5%. While the remaining 7.5% is explained by other variables not included in the model. As independent variable age, number of cattle ownership, knowledge, attitude, and intensity of communication proved to have a positive and significant effect on the motivation of farmers to raising cow on Bali cattle breeding business, whereas formal education had negative and no significant effect.
The effectiveness of Solar Tracker Use on Solar Panels to The Output of The Generated Electricity Power
Authors: Edward Arnold , Dewi Tresna , Rusdianasari
Published: November 2019

With the aim of optimizing the electrical power output of the solar panels, the solar panels are installed facing perpendicular to the sunlight, then solar panels that can be moved automatically to follow the direction of the sun position. A solar tracker is made PT. Pertamina Plaju RU-3, using 3 units of Solar Power Plant (PLTS) equipped with Solar Tracker, using an actuator that moves solar panels facing the direction from sunrise to sunset. The effectiveness test of the solar tracker on the output power of solar panels is done by adjusting the position 3 unit PLTS against the sunlight, namely at Tracking and Static (Fixed) Position. Arrangements were made in several combinations of positions and measurement of the electrical power output. From the measurement results, obtained a graph that describes the characteristics of changes in output power that are not affected. This is caused by the electrical energy generated by the solar panels only occur optimally from 10 AM until 2 PM. When heading east before 10 AM and west after 2 PM, solar panels absorb solar energy very low. Solar tracker does not increase the efficiency of solar panel power output. Thus the Solar Panel installed in an area close to the equator does not require a Solar Tracker, and it would be better if the solar panel is positioned statically or fixed, with the position of the solar panel facing upright perpendicular to the direction of the sun coming at 12 AM.
Methodology of assessing traffic service level at intersections of feeding focal points
Authors: Zedgenizov A V , Bulanov N S
Published: November 2019

The article presents the methodology of assessing the level of traffic service during the operation, conversion or creation of new focal points in urban areas. The presented methodology of assessing the level of traffic service within the context of traffic performance of uncontrolled intersections allows assessing the degree of influence of focal points on the adjacent street-and-road network. The methodology contains nine consecutive steps and results in assessment of the level of traffic service. The distinctive feature of the methodology is the need to distribute the intensity of traffic flows at the entrance or exit to/from the territory in question when there are several feeding intersections. The result of distribution of transport flows is a matrix that relies on the intensity of the transit flow. If the intensity of conflicting traffic flows exceeds the limit values recommended by the national regulatory standards, the traffic must be controlled by traffic lights. An integrated mathematical model is presented; it allows assessing the load factor of traffic on the basis of open source data, for example, geometric parameters of feeding intersections, the area of the focal point and its remoteness from the city center. Such data can be obtained using GIS technologies. The unique character of the integrated model is that it involves parameters reflecting both the transport demand and traffic performance of the feeding intersection. The model includes the boundary intervals of vehicles driving in the main flow and the intervals of movement in the minor flow. The sequence of calculation of the transport demand converted into the influence of traffic flow intensity on the street-and-road network and traffic load factor is shown. Recommendations on how to choose a traffic management pattern for uncontrolled intersections are given.
Relevance of using electrobuses as public transport in the city of Krasnoyarsk
Authors: Zeer V A , Filatov A N , Vetrov S N , Glukhikh R S , Perikov D S
Published: November 2019

The article presents the results of the comparative assessment of using autonomous electric transport instead of buses with diesel internal combustion engines that are currently in operation; they are of the same class in terms of environmental and economic characteristics.It is the case study of one of the routes of Krasnoyarsk based on the official data for 2018.
The mutual influence of the A/C condenser and radiator cooling system
Authors: Petov A , Bannikov S , Petrova V
Published: November 2019

Car air conditioning systems are installed on many cars. The system leads to direct energy costs. In addition, the system elements have an additional influence on the efficiency of the engine cooling system, inasmuch as both systems use the same air flow for cooling. The mechanism of the air flow passing through heat exchangers has been investigated. The study showed that part of the air flow does not pass through the core of the condenser, but flows around it along the external contour. The degree of flow-around depends on several factors.
Structural and mechanical maintenance of quality of the rolled stock for cold upsetting of metal articles
Authors: Filipov A A , Pachurin G V , Goncharova D A , Nuzhdina T V , Mukhina M V , Katkova O V , Matveev U I , Tsapina T N
Published: November 2019

A widely spread and most productive way to obtain finished metal articles with high structural and mechanical properties are methods of cold heading out of rolled metal, which must have a certain quality - the required plasticity, uniform structure and process parameters along the full length, as well as soundness. In conditions of fierce competition in order to improve the quality of the upset metal articles, the enterprises are forced to find reserves at all the points of the process chain for transformation of the original rolled metal. The greatest effect is achieved by the excluding of energy-consuming and labor-intensive annealing in protective gas furnaces and control of surface defects by etching or mechanical operations. This paper is presenting an economical and environment-friendly technology for structural and mechanical maintenance of high quality of rolled stock for upsetting of metal articles. The rolled steel prepared by this technology has a highly dispersed equally spaced structure without a decarburized layer with increased plasticity, which enables to reduce the number of transitions in the process of upsetting of metal articles and to increase the tools service life.
Experiment of using thermal insulating materials for accumulation of heat in the transmission
Authors: Dolgushin A A , Voronin D M , Syrbakov A P
Published: November 2019

Operation of production vehicles in conditions of negative temperatures is related to certain difficulties. One of the main problems is the intensive heat extraction from the unit surface in the environment. As a result of heat exchange, the thermal mode of the unit work is broken. It leads to the change of viscosity-temperature characteristics of lubricating oil. Operation of transmission units in such conditions results in the decrease of vehicle fuel efficiency, diminution of service life of the main units and parts and deterioration of ecological efficiency of their work. This article is devoted to the experiment of using thermal insulating materials aimed at reducing heat loss in the transmission. The method of calculation of thickness of a thermal insulation layer is proposed. The necessity of the employment of infrared thermal imaging to detect areas subject to insulation is substantiated. It is revealed that the area of insulation on the unit under study makes up 1.45 m2. The intensity of transmission cooling with the use of liquid insulation is studied. It is established that the insulation of the unit casing allows reducing heat removal rate and increasing cooling-off time from 360 to 540 minutes. The process of heating of the thermally insulated unit is studied. It is determined that the use of liquid insulation allows intensifying the unit heating. The time to stabilization mode decreases by 35% to 45 minutes, and the stabilized temperature increases by 8 K.
Evaluation of the limit properties of a solid body system
Authors: Eltoshkina E V , Ilyin P I , Ovchinnikova N I , Svirbutovich O A , Rozhkov D M
Published: November 2019

This article discusses the design of modern wheel-transport vehicles, in which the problem of reducing the level of vibrations and shocks arises, since the quality and performance, reliability and durability of the operation of machines, devices and equipment depend mainly on the resulting fluctuations during their operation. Also, solutions of problems concerning the limiting properties of solid-state systems for cases of harmonic and shock effects are discussed. The design model of many technical objects is a solid body, which is onboard radio electronic equipment (REA). For the selected model of a solid body, a system is designed for the vibration isolation of a block, at s points of which there are electrical radio-sensitive elements that can withstand a given limiting vibration acceleration. The synthesized vibration-proof system is implemented with the help of linear passive elastic-damping suspensions and active elements, which represent an ideal servo-mechanism.
Influence of tire tread pattern wear on characteristics of its longitudinal adhesion with bearing surface
Authors: Fedotov A I , Markov A S , Makhno D E , Vikulov M A
Published: November 2019

The aim of the research was to carry out the experimental study of the influence of tire tread pattern wear on characteristics of the longitudinal adhesion with the bearing surface in order to detect functional relationships of the adhesion coefficient against the value of tread pattern wear and the value of normal load. The experiments were carried out according to the original methodology on the laboratory tester of a modular type that allows studying the processes occurring in the elastic tire area contacting with the flat, one cylindrical, two cylindrical bearing surfaces. The experimental research allowed obtaining the 35.3% decrease of the longitudinal coefficient of elastic tire adhesion while increasing the value of tread pattern wear from 10% to 90%. The study of brakeage of the wheel with elastic tire on one bearing roller showed the 18% decline of the adhesion longitudinal coefficient with the tread pattern wear varying from 10% to 90%. During the wheel braking on two bearing rollers and the tread pattern wear increased from 10% to 70% the longitudinal coefficient of adhesion fell by 23.8% on the front bearing roller and by 48.4% on the rear roller. The result of the given research is detected functional relationships of adhesion longitudinal coefficient against the values of tread pattern wear and normal load for three types of the bearing surfaces.
Optimization of transport activity of industrial enterprises in the Arctic region based on logistics solutions
Authors: Egorova T , Delakhova A
Published: November 2019

Functioning and development of industrial enterprises operating in the Arctic conditions depends largely on organized and well-coordinated work of all the links in the supply chain. The lack of the year-round transport infrastructure in the regions of the Arctic zone significantly increases the transport costs of the enterprise. When solving these problems, it is necessary to improve the accuracy of planning, analysis and assessment of the logistics processes of supply, storage and transportation of material flows of the enterprise. The application of logistic methods for solving problems allows developing rational schemes for the delivery of goods, which can have a positive impact on the economic results of the company’s transport activities. The authors consider a method for solving the Make-or-Buy problem (MOB - “to make or buy”), when in terms of logistics service purchase other options with intermediary vehicles are considered as alternatives in order to minimize costs.
Lateral response formation process between an elastic tire and a supporting surface when a slip angle wheel crosses a single irregularity
Authors: Yu Kuznetsov N , Fedotov A I , Lysenko A V , Tikhov-Tinnikov D A , Vlasov V G , Ishkov A M
Published: November 2019

The article presents the results of an analytical and experimental study of RY
lateral response formation between the elastic tire and the support surface when the wheel with the slip angle δ moves over a single irregularity. In this paper bench methods of experimental study of RY
lateral response formation process between the elastic tire and the support surface, when the wheel with the slip angle δ moves over a single irregularity, are used. The experiment results have been obtained in bench conditions on a special test bench developed by the scientists of the Department of Automobile Transport of Irkutsk National Research Technical University. The results of experiments and calculations are presented in the form of graphs. The results obtained allow us to assert that in the research of RY
lateral response formation between the elastic tire and the support surface, when the wheel with the slip angle δ crosses a single irregularity, it is necessary to consider the unsteady mode of wheel rolling and take into account the fluctuations of individual tire parts.
Influence of pressure and temperature on the parameters of liquid-crystalline working fluids of technical devices
Authors: Larionov A N , Polivaev O I , Larionova N N , Bozhko A V , Gorban L K
Published: November 2019

The promising use of liquid crystals for the development of technical devices is substantiated. The acoustic method is used to study the dependence of parameters of liquid crystals on the pressure and temperature, which characterize the operating speed of electronic devices with a liquid-crystalline working fluid. We studied the relaxation properties of mixtures of nematic liquid crystals LC-440 and N-96. Within the framework of the molecular statistical theories of the nematic phase, the dependence of the coefficient of rotational viscosity on temperature and pressure is analyzed. The influence of the structure of molecules and molecular complexes of nematic liquid crystals on the dependence of the coefficient of rotational viscosity on external conditions is established. The results of original studies of the dependence of the coefficient of rotational viscosity on pressure and temperature at a constant volume are presented.
Performance steering and front suspension of the car
Authors: Bazhenov Y , Amirseyidov Sh
Published: November 2019

The article contains the research results aimed at reliable performance of the front suspension and the steering system of the car in operation. The main malfunctions of these systems were detected (bus LiAZ-5256 was selected as the object of research) and their influence on “withdrawal” from the specified movement trajectory was identified. The set of diagnostic parameters was substantiated for the assessment of the technical condition of these systems and their standard values, which were the necessary components to provide the function ability of these systems. The search and the fault recovery algorithm in steering system and front suspension of the car were offered.
Effect produced by corrosive environment on fatigue resistance of automotive structural steel
Authors: Pachurin G V , Filippov A A , Goncharova D A , Nuzhdina T V , Matveyev Yu I , Mukhina M V , Kutepova L I
Published: November 2019

We have studied the influence of corrosive environment on the mechanism of changes in fatigue resistance of automotive structural steels. Analysis of the experimental data has shown that the fatigue resistance of metal materials in corrosive environments is reduced significantly with the increased time of testing. This, in turn, causes a continuous decrease in fatigue curves in the multi-cycle area without reaching the endurance limit. We have identified the factors affecting the resistance to fatigue failure: the medium and its aggressiveness; stress cycle frequency, shape and asymmetry. The presence of a corrosive environment makes it problematic to determine the moment of origin of a macro crack, necessary for the analytical assessment of the time before its appearance. The proposed use of the current sag curves under the sample cyclic loading will allow to fix the moment of the crack origin and to determine the speed of its subsequent propagation. This allows to optimize the choice of structural materials for machines taking into account the operating conditions and to justify the technological manufacturing process in order to reduce material consumption, increase durability and maintainability.
Rotational dynamics of piston diesel engine crankshaft with deactivated cylinders at idle
Authors: Krivtsov S N , Krivtsova T I , Grebennikov A S
Published: November 2019

Diesel engines have been diagnosed on the basis of a dynamic method. To improve the informativity of the determination of general technical condition of each of the cylinders, it is proposed to apply a well-known test action i.e. termination of operation. In this case, analysis should be given to both the contribution of the cylinder in the operation and the acceleration imparted to the crankshaft by the cylinder in the absence of fuel supply. The paper presents a mathematical model that takes into account the relationship of the dynamics of rotation of the crankshaft with the pressure of gases in the cylinder, including when it is deactivated. The analysis of functional dependences has allowed to receive coupling equations between parameters of tightness of the cylinder and angular crankshaft acceleration. Analytical and experimental study of the crankshaft rotation dynamics with deactivated cylinders at idle speed allowed to conclude that parameters of the crankshaft rotation irregularity allow assessing the engine cylinders’ technical state both in the run mode and in the idle mode. The diagnostic parameter allows determining the leak tightness of the over-piston space at idle speed is suggested. It equals air pressure differential in the cylinder at 50 degrees before TDC and at 50 degrees after TDC over the pressure at 50 degrees before TDC. It was installed, that both extrema of angular accelerations and their average values during compression and expansion can be used to diagnose the technical condition of cylinders.
Tool assessment of AEBS efficiency during test procedure performed using RuNCAP method
Authors: Ivanov A M , Kristalniy S R , Popov N V , Toporkov M A , Sidorov D V
Published: November 2019

The paper describes a necessary set of test equipment that helps to carry out research work on AEBS effectiveness using the RuNCAP method. The measuring complex allows evaluating the ability of the AEBS system to recognize the various “targets”, the incoming moment of the collision warning signal and the effectiveness of automatic braking actions. There is a parametric record appearing while processing the AEBS test results of a Subaru Outback automobile. The TTC parameter (Time to collision parameter) is used to estimate timeliness of incoming moment of collision warning signal and automatic braking phase.
Operating conditions calculation during three-dimensional process charts construction of the trucks reliability
Authors: Ozornin S , Tarasov I
Published: November 2019

The article shows that the existing methods of determining the trucks reliability do not take into account the level of load effect during the operation. Depending on climatic conditions, road surface categories, carrying capacity use conditions and technical service quality, the cumulative value of the load impact will vary and affect the reliability index. The purpose of the work is to identify the relationship between the reliability indices and the cumulative value of the impact, as well as a graphical interpretation of these dependencies using three-dimensional reliability process charts. In the paper the methods determining the accumulation rate of loading effects on vehicles and their impact on the probability of failure-free operation and the failure rate of trucks are used. The sequence of collecting statistical data on failures and operating conditions is given. The theoretical bases determining the operating reliability indices dependence on the loading action level are also discussed. The sequence of three-dimensional reliability process charts construction is presented. The obtained results give the possibility of updating the modes of maintenance for various makes and models of commercial vehicles taking into account the operating conditions.
Method of roadholding control of the vehicle of category M 1 under operating conditions
Authors: Lysenko A V , Fedotov A I , Tikhov-Tinnikov D A
Published: November 2019

The article presents the results of the study aimed at improving the safety of motor vehicles (hereinafter - vehicle) under operating conditions. The estimation of indicators of vehicle stability is made by controlling the parameters characterizing change of the trajectory of the vehicle under the action of a lateral force when crossing a single irregularity. The results of the study are presented in the form of graphs and functional dependences. Using the revealed functional dependences reflecting the effects of the technical condition of the vehicle shock absorbers with the parameters, characterizing the change in its movement trajectory under the action of a lateral force, when crossing a single irregularity, a method for controlling the vehicle road holding of M1category was devised.
Enhancement of fuel consumption regulation for city buses in the Russian Federation
Authors: Ilyanov S V , Borisov G V
Published: November 2019

The stages of the development of fuel consumption regulation for vehicles in the USSR and in the Russian Federation are shown, and the main concepts of the research into fuel consumption regulation for buses are described. The paper considers mathematical models to predict fuel consumption for vehicles with regard to high-speed movement modes, and determines fuel consumption for city buses.
The research into the rolling radius of a wheel when dealing with rollers of a roller tester
Authors: Yan’kov O S , Kamnev A V , Sherstenev S S
Published: November 2019

The paper focuses on one of the factors that significantly affect the occurrence of errors in the measurement of traction qualities of the car on the roller tester with two pairs of support rollers. It is hypothesized that the value of the rolling radius is significantly influenced by factors such as: the displacement of the wheel a relative to the symmetry plane of the support rollers of the tester, the load on the wheel and the air pressure of the pt
in the tire. The change of these factors changes dramatically the value of the rolling radii rk01
and rk02
– wheel rolling radii in the driven mode. The authors propose a method for determining the rolling radius of the wheel and present the study results. The functional dependences obtained in the course of the experimental study were correctly approximated by equations, which allows one to perform calculations of the rolling radii rk01
and rk02
on two cylindrical support surfaces of the tester, taking into account the load on the wheel, its displacement a and the tire air pressure pt
.
On impact of vehicle headlights contamination with products of road chemical deicing agents upon pedestrian visibility on unlit roads
Authors: Gromalova V O , Fedotov A I , Gergenov S M , Zedgenizov V G , Neskoromnykh V V
Published: November 2019

The goal is to determine consistent patterns that characterize the impact of vehicle headlamps contamination caused by products of chemical deicing agents treatment (PCDAT) used on the roads on the driver’s ability to see pedestrians on unlit roads. The analysis of theoretical works devoted to the impact of vehicle headlamps contamination with PCDAT upon their lighting the road was carried out. The authors conducted experimental studies of the process of contaminating vehicle headlights with PCDAT used on roads in winter under the real traffic conditions as well as measurements of luminous intensity of the contaminated headlights. Experimental studies of a pedestrian’s visibility on the side of a dark unlit road under the conditions of headlights contaminated with PCDAT were carried out. The authors developed the procedure of experimental studies to measure the distance of pedestrian visibility on a dark road with passing and driving beam headlights. The patterns that characterize the impact of vehicle headlamps contamination caused by PCDAT upon the driver’s ability to see pedestrians on unlit roads were determined. The results of the experiments are presented as tables, graphs and equations reflecting the new data. They relate to the consistent patterns of the impact of vehicle headlamps contamination caused by PCDAT on the driver’s ability to see pedestrians on an unlit road side in winter. The graphs allow analyzing the influence of vehicle headlamps contamination with PCDAT upon the driver’s ability to see pedestrians on the side of unlit roads in winter.
Method for determining the shock absorber effectiveness in the vehicle suspension to ensure its active and operational safety
Authors: Ryabov I M , Pozdeev A V , Erontaev V V , Danilov S V , Omarova Z K , Kovalev A M , Silchenkov D D
Published: November 2019

The article is devoted to the development of a new method for determining the shock absorber effectiveness in the vehicle’s suspension on a vibration stand with vibrating plates, which has greater accuracy and functionality compared to the already known method. The use of the new method will make it possible to reduce the risk of accidents and improve road safety with its widespread introduction.
Improved method for calculating performance parameters of vehicles before conclusion of a cargo transportation contract
Authors: Markelova T V , Vitvitskiy E E , Kh Tolebaeva A
Published: November 2019

Fulfillment of contractual obligations for cargo transportation, as shown by the results of practical observations, can be hindered by inaccurate or incomplete knowledge of features of cargo transportation by road transport in cities. These drawbacks in preparation of contracts for cargo transportation may cause a situation where the carrier assumes obligations inherently impossible in specific operating conditions. This can lead to unexpected freight charges.
Evaluating reliability of municipal public transport operation in the Russian Federation cities
Authors: Yu Mikhailov A , Sharov M I , Levashev A G , Butuzova A B , Ovchinnikova N I
Published: November 2019

The article presents the results of a study of municipal public passenger transport routes operation reliability. For the first time in Russian practice, a range of Travel Time and Buffer indices values is identified based on route networks of two different cities. A scale to evaluate route reliability levels is proposed.
Minimization of resource costs, improving the environmental and operational safety of urban road transport using braking energy recovery systems
Authors: Ryabov I M , Shiryaev S A , Kovalev A M , Rayushkina A A , Danilov S V , Yusupov Yu G , Omarova Z K
Published: November 2019

The article assesses the cost minimization, as well as the environmental and operational safety of urban road transport in the Russian Federation. It is clear that the most reliable and promising systems for the recovery of car braking energy are systems equipped with a pneumo-hydraulic accumulator. Pneumo-hydraulic braking energy recovery systems can reduce fuel costs and the emission of harmful substances more than 2 times.
Diagnostics of piston space tightness by pressure change in engine casing under dynamic loading
Authors: Safonov A V , Vertey M L , Syrbakov A P , Shnitkov G V , Krivtsov S N , Berezhnov N N
Published: November 2019

One of the shortcomings of the method of determination of piston space tightness state by crankcase gases flow is high error. Primarily, it relates to the fact that when crankcase gas flow changes, such negative effect as the pulsation of crankcase gases appears. The value (magnitude) of pulsation of different engines varies greatly, and so does the error of the method. The diagnostics method of combustion engines CPG by the change of engine crankcase gases state parameter is discussed in the work. Theoretical substantiation and experimental testing of the proposed method are carried out.
Ensuring road safety on the basis of engineering-psychological evaluation of drivers labour
Authors: Zharov S , Vasilev V , Ovsyannikov V , Deneko M.
Published: November 2019

The analysis of the causes for the vehicle drivers’ faults is realized. It is established that the most significant cause of erroneous actions is a number of faults, caused by the unique feature task, as well as characteristics of the reduced information. This circumstance determines the use of engineering psychology methods. The engineering and psychological evaluation of the truck driver depending on the vehicle speed and the driving mode (overtaking the “leader” from the course and transition to the driving mode after the “leader”) is realized. These studies allow us to obtain the dependence of the average speed of information processing SL and the total complexity indicator of the SD algorithm on the movement speed. Recommendations on improvement of the driver’s labour organization which decrease the faults probability and increase the traffic safety are formulated.
Creation of optimal warehouse of spare parts with minimum cost and maximum fail-safety
Authors: Malkin V S , Kravtsova E A , Turbin I V , Popova L I
Published: November 2019

In this article we present the method of creation of spare parts warehouse, conditions for ensuring the best reliability of warehouse with lowest total cost of spare parts storage. The method is based on Poisson-law distribution of probability of consumption of each part in a given period of time. The calculation program was developed for use on a personal computer.
Calculation and experimental assessment of passive safety for special buses on truck chassis, taking into account the influence of operating temperature conditions
Authors: Vashurin A S , Orlov L N , Trusov A P , Chegurov M K
Published: November 2019

The problem of reducing the severity of accidents is one of the most important. About 30% of accidents with serious consequences are those involving buses. One of the most dangerous types of bus accidents is overturning. The power structure of the body of multi-passenger vehicles are subject to the requirements regulated by the UNECE Regulations No.66. A separate specific group consists of shift buses on the chassis of trucks, designed for operation in harsh natural and climatic conditions in areas with an under-developed road network. It is known that, depending on the type, nature and structure, structural materials have different strength characteristics at a given temperature. The strength characteristics of the materials used in the construction of bodies have a primary impact on the level of passive safety of buses. Therefore, there is an urgent task of assessing passive safety of this type of buses in the entire temperature range of their operation. The present article presents some experimental dependences of the strength material characteristics used in bodies on the temperature. A detailed finite element model-specific for this class of body buses from sandwich panels is shown. Some characteristics of this type body simulation are also discussed. Results of the study of passive safety of a shift bus with a body of sandwich panels in the temperature range of the bus operation are obtained. The necessity of assessing the passive safety in the entire temperature range of operation of this specific category of buses is shown.