en و موضوعات مربوط Other Related Subject پژوهشي Research <span style="FONT-FAMILY: "Times New Roman","serif" FONT-SIZE: 11pt mso-ansi-language: EN-US mso-fareast-font-family: 'Times New Roman' mso-fareast-language: EN-US mso-bidi-language: FA"><em>In recent years, Many manufacturing industries for promoting their efficiency have tended to use the automatic manufacturing systems. Expanding automatic systems and to increase their complexity are representing the necessity of studying a proper functional quality and using reliable equipment in such systems more than ever. In this direction, the technique of fault tree analysis (FTA), along with using other techniques such as failure mode and effect analysis (FMEA) reveals the incorrect performance states (modes) in system in order to know these modes exactly may prevent their occurance and increase their function quality. In this study, the approaches may increase the reliability of performance in an industrial robot are studied by FTA technique as a case study to show improvement in performance of equipments on automatic systems to reduce their destruction (fault) during the work, and finally access to an automatic manufacturing systems with high reliability.</em></span> Failure mode and effect analyses, fault tree nalysis, Automatic manufacturing 85 89 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-85-11&slc_lang=en&sid=1 Mahdi Karbasian mkarbasi@mut-es.ac.ir 180031947532846001768 180031947532846001768 Yes Department of Industrial Engineering, Malek-e-Ashtar University of Technology Mahdi Rostami Mehr 180031947532846001769 180031947532846001769 No Quality Assurance Deputy, Azar Dandeh Co Mojgan Agharajabi 180031947532846001770 180031947532846001770 No Researcher in Industrial Engineering