شماره ركورد كنفرانس :
4560
عنوان مقاله :
An experimental study on the ratcheting and fatigue behavior of polyacetal under uniaxial cyclic loading and internal pressure
Author/Authors :
Mahmoud Shariati Mechanical Engineering Faculty - Shahrood University of Technology, Shahrood , Javad Yazdannezhad Mechanical Engineering Faculty - Shahrood University of Technology, Shahrood
كليدواژه :
Ratcheting , Fatigue , Internal pressure , Polyacetal , Experimental test
عنوان كنفرانس :
The International Conference on Experimental Solid Mechanics and Dynamics ۲۰۱۲
چكيده لاتين :
Ratcheting phenomena is one of failure modes. So study of ratcheting behavior and its effective parameters is essential to control it and improve fatigue life of structures components. To study some parameters of ratcheting strain and fatigue life of polyacetal, some experimental tests have been applied by using Instron servohydrolic machine under uniaxial loading and internal pressure. Effects of internal pressure is analyzed. Results showed by increasing cycles, softening occurred in material. Also result showed at initial cycles by increasing pressure, the ratcheting strain values increased. Increasing internal pressure ends to decreasing fatigue life.
