انتخاب استراتژی نگهداری و تعمیرات به منظور بهبود شاخص های ارزیابی قابلیت اطمینان و تعمیرپذیری

مدیریت بهره‌وری

مقاله 7، دوره 11، 3(42)پاییز، آذر 1396، صفحه 175-196   

نوع مقاله: علمی پژوهشی

نویسندگان

چنگیز والمحمدی^{* 1}؛ جواد صوفیابادی²؛ فخرالدین لطف زاده³

¹دانشیار، گروه مدیریت فناوری واطلاعات،واحد تهران جنوب،دانشگاه آزاد اسلامی،تهران، ایران.

²کارشناس ارشد، باشگاه پژوهشگران جوان، دانشگاه آزاداسلامی، فیروزکوه. تهران،ایران

³کارشناس ارشد، مدیریت صنعتی،واحدتهران جنوب دانشگاه آزاد اسلامی،تهران، ایران

چکیده

هدف تحقیق حاضرانتخاب استراتژی نت با توجه به تأثیرگذاری نوع استراتژی بر بهبود شاخص های ارزیابی قابلیت اطمینان و تعمیرپذیری در یک شرکت تأمین کننده تجهیزات و ماشین آلات حوزه نفت و گاز می باشد. پژوهش پیش رو بر اساس هدف و نوع گردآوری داده ها، کاربردی و آزمایشی است. داده های تحقیق با بهره مندی از فرم های استاندارد بازدید روزانه، علت و معلول و آنالیز اثرات و حالات خرابی از نه دستگاه تراش طی دو فاز مطالعاتی استخراج شده است. با تأیید نرمال بودن داده ها، فرضیات تحقیق با آزمون فرض میانگین یک جامعه،T زوجی و ضریب همبستگی درون گروهی مورد بررسی قرار گرفت. در فاز اول، استراتژی نت بهره ور فراگیر و نت مبتنی بر قابلیت اطمینان اجرا شد و در فاز دوم استراتژی نت ترکیبی اجرا گردید. در هر دو مرحله شاخص های میانگین زمان بین خرابی و میانگین زمان تعمیر مورد سنجش و ارزیابی قرار گرفت تا تأثیرات سه استراتژی مقایسه و بهترین استراتژی نت انتخاب شود. نتایج نشان می دهد، استراتژی نت ترکیبی موجب بهبود شاخص های ارزیابی قابلیت اطمینان و تعمیرپذیری و افزایش بهره وری ماشین آلات و تجهیزات می شود.

کلیدواژه‌ها

نت بهره ورفراگیر؛ نت مبتنی بر قابلیت اطمینان؛ میانگین زمان بین خرابی؛ میانگین زمان تعمیر

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