عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TL53062
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Uniaxial and Multiaxial Fatigue Behaviors of HDPE and Several Neat and Short Glass Fiber Reinforced Thermoplastics Including the Effects of Temperature, Mean Stress, Frequency, and Stress Concentration
نام عام مواد
[Thesis]
نام نخستين پديدآور
Amjadi Kashani, Mohammad Reza
نام ساير پديدآوران
Fatemi, Ali
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
The University of Memphis
تاریخ نشرو بخش و غیره
2020
يادداشت کلی
متن يادداشت
256 p.
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
The University of Memphis
امتياز متن
2020
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
High-Density Polyethyelen (HDPE) is a very high volume polymer used in many applications such as piping systems in geo-exchange systems or replacing heavier materials in automotive fuel tanks. The most common processing techniques to manufacture HDPE parts are injection molding, blow molding, and compression molding. Combination of cyclic and static loads are inevitable in many applications, therefore, this study investigated tensile, creep, fatigue, and creep-fatigue interaction of HDPE under a variety of conditions including environmental (temperature), stress concentration, cycling frequency, and stress state. Multiaxial stress state effect on fatigue life at room temperature was investigated for HDPE, Polypropylene, neat Nylon 66, and Nylon66 short fiber (%30 glass fiber) composite. The damage mechanisms in the considered thermoplastics were evaluated through experimental fatigue tests. Notch effect on fatigue life was also studied due to the importance of stress concentration effect on fatigue behavior and the fact that they are inevitable in many design situations. Current common multiaxial fatigue criteria were assessed for experimental data and a critical plane-based damage parameter was proposed for multiaxial behavior of HDPE as well as the other studied thermoplastics. Injection molding as a common processing technique for polymers has a high production rate, low manufacturing cost, and flexibility to manufacture complex geometries. Experimental multiaxial fatigue data from literature for injection molded short glass fiber reinforced thermoplastics including Polypropylene, Polybutylene Terephthalate, and Nylon 66 were also included in this study to investigate the effect of fiber orientation on multiaxial fatigue behavior of these polymeric composites with aligned fibers. A modification of the critical plane damage parameter was proposed to account for fiber orientation, mean stress, and stress concentration on multiaxial fatigue behavior of short glass fiber reinforced thermoplastics with injection molding processing technique
اصطلاحهای موضوعی کنترل نشده
اصطلاح موضوعی
Engineering
اصطلاح موضوعی
Mechanical engineering
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Amjadi Kashani, Mohammad Reza
نام شخص - ( مسئولیت معنوی درجه دوم )
مستند نام اشخاص تاييد نشده
Fatemi, Ali
شناسه افزوده (تنالگان)
مستند نام تنالگان تاييد نشده
The University of Memphis
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
