[en] Abstract: In this work, it is shown a computer application, that has been developed in the graphic environment of Matlab, for the particularization of the multiaxial fatigue methods to the uniaxial and pure torsional cases. Therefore, whithin the different mechanical engineering trades, it belongs to the Design field; and more specifically, to the area of fatigue with multiaxial stresses. There are a lot of multiaxial fatigue methods. In spite of this, there is not a definitive method since in each case (material, type of stresses…) it should be used the one that best fits. The correct way would be to carry out experimental tests simulating the real characteristics of the part, but this is excessively costly so, as a result, it is usually carried out only in particular cases. Hence, the development of this software is aimed to provide a tool that could help on the identification of the method that best fits to the material without the need of carry out multiaxial fatigue tests. Despite the many methods that exist, those that are going to be particularized are Sines, Crossland, Matake, Findley, Dang Van and Papuga PCr since they are six of the most commonly used. All of them are advanced multiaxial fatigue methods which, using the material data entered by the user, will be particularized for both the uniaxial and pure torsional cases and then, they could be plotted. In addition, in order to be able to identify the method that best fits, it will be posible to plot the failure points saved in the application's own library together with those that are added by the user. Finally, as a result of the relationship between this work and the Fracture and Fatigue Analysis and Design Methods subject that is taught in the first year of the UPV/EHU Master´s Degree in Mechanical Engineering, it is intended to provide a complementary tool for its teaching. In this way, as well as be a teaching aid, the app is to show the students who are introducing to the multiaxial fatigue issues, the possibility of carrying out this type of works as they can be interesting and great potential for this field.

[eu] Laburpena: Lan honetan, Matlab softwarea baliatuz fatiga multiaxialeko metodoak kasu uniaxialera eta bihurdura purura zehazteko aplikazio informatiko bat aurkezten da. Hortaz, Ingeniaritza Mekanikoa dituen arlo desberdinetatik, Diseinu eremuaren barnean materialen fatigarekin zerikusia dauka; tentsio multiaxialen eraginpenean dauden materialen fatigarekin hain zuzen ere. Fatiga multiaxialerako hainbat método badaude ere, ez dago bakar bat behin betikoa denik zeren eta egoera bakoitzean (materiala, tentsio motak…) bata edo bestea erabiltzea komeni da hoberen egokitzen denaren arabera. Horretarako, errealitatean lan egingo den materialarekin saiakuntza experimentalak egitea aproposa izango litzateke, aldiz, oso garestia denez, kasu partikularretan baino ez da egiten. Hori dela medio, software honen xedetariko bat, fatiga multiaxialeko saiakuntzak egin barik, material bakoitzeko metodo aproposena identifikatzen laguntzen duen tresna bat eskuratzea da. Gaur egun makina bat metodo daude baina lan honetan erabiliko direnak Sines, Crossland, Matake, Findley, Dang Van eta Papuga PCr dira; batez ere gehienbat erabiltzen diren metodoak direlako. Aipatutako guztiak, fatiga multiaxialeko metodo aurreratutzat har daitezke eta, erabiltzaileak aplikazioan sartutako balioak erabiliz, kasu uniaxialera eta bihurdura purura zehaztuko dira, geroago marrazteko aukera izateko. Honez gain, grafiko berberetan hainbat materialen hutsegite puntuak sartzeko aukera egongo da, bai aplikazioaren liburutegian gordeta dauden balioak bai erabiltzaileak gehitutakoak. Azkenik, lan honek Euskal Herriko Unibertsitateak eskaintzen duen Ingeniaritza Mekanikoko Masterrean Fatiga eta Hausturaren analisi eta diseinaketa metodoak deitutako irakasgaiarekin lotura duela medio, bere irakaskuntzarako tresna baliagarria izan daitekela uste da. Horrez gain, tentsio multiaxialen eraginpenean dauden materialen fatiga ikasten hasi direnentzat, hemen aurkezten den antzeko proiektuetan sakontzeko aukera erakutsi nahi da; izan ere, garatutako aplikazio gisako tresnak interesgarriak direla ondoriozta daiteke.