- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
STRAIN LIFE FAILURE OF HDPE,PP AND PMMA POLYMERS | ||
| AL-TAQANI | ||
| Article 1, Volume 26, Issue 5, 2013, Pages 0-0 | ||
| Author | ||
| Ali Ahmad Ali | ||
| Abstract | ||
| The present work comprises the low cycle fatigue testing for three types of polymer materials, high density polyethelen (HDPE), polyproplene (PP) and polymethyl methacrylate (PMMA). The LCF tests carried out using standard specimens of cantilever beam type. The results confirmed that the behavior of the strain life of polymers is similar to behavior of the strain life of metals (ductile). The HDPE and PP recordedthevalues of fatigue strength exponent (b) and the fatigue ductility exponent (c) within the general limitation of the ductile metals. The results confirmed the number of transition cycle (NT) are most convergence between the HDPE and PP whereas noted, there is large difference between these materials with PMMA , and the plastic strain of PMMA are zero ,this mean that the material is not ductility.polymethyl methacrylate polymer exhibits sensitivity to external stress concentration in terms of reduction of total strain amplitude with lower value of the notch radius. | ||
|
Statistics Article View: 93 PDF Download: 34 |
||