After completing your online industrial engineering degree, you can work with business owners and managers to design solutions to problems related to production and efficiency. Industrial engineers help companies decide on product development, marketing strategies, and resource allocation. Industrial engineers apply their knowledge of mathematics, physics, chemistry, biology, economics, sociology, psychology, and computer sciences to develop designs and systems for products, processes, machines, materials, and services. Industrial engineers work with manufacturers to design equipment and machinery. They must understand the physical properties of materials and how those properties affect performance. They must also know how to measure and control variables such as temperature, pressure, speed, and force. Industrial engineers must also be able to calculate forces and stresses using mathematical formulas. Industrial engineers work with maintenance personnel to repair or replace damaged parts. They must inspect equipment regularly to identify potential problems before they become serious issues. They must also perform routine maintenance tasks such as cleaning filters, replacing worn bearings, and checking fluid levels.