Effect of laser shock peening on fatigue stress concentration of polyester reinforced by Al-Micro powder composites

المؤلفون المشاركون

Mutashshar, Ammar A.
al-Khazraji, Ahmad Nayif Ibrahim

المصدر

Engineering and Technology Journal

العدد

المجلد 38، العدد 3A (31 مارس/آذار 2020)، ص ص. 325-334، 10ص.

الناشر

الجامعة التكنولوجية

تاريخ النشر

2020-03-31

دولة النشر

العراق

عدد الصفحات

10

التخصصات الرئيسية

العلوم الهندسية و تكنولوجيا المعلومات

الملخص EN

Laser shock peening is a widely common process for materials treatment and typically used for fatigue strength enhancement especially for metals.

In this paper, its effect on polymeric composite materials studied experimentally.

Unsaturated polyester was used as a matrix in order to composites preparation and Aluminum powder as fillers.

A Hand lay-up technique has been used for composites making.

Composites with three volume fractions of Aluminum powder were prepared (2.5%, 5%, and 7.5%).

Fatigue specimens as a standard and with (1mm) semi-circular notch are prepared for testing.

The fatigue test was performed at room temperature and stress ratio (R=-1).

Laser shock peening with two levels of energy have been applied (1Joule, and 2Joule).

The results showed an increase in the endurance strength of the notch for 7.5% volume fraction especially at 1J laser energy by about 26.7056% compared with the un-treatment notched state, which in turn reduced the fatigue stress concentration by about 21.0508% compared with standard fatigue stress concentration.

On the other hand, the presence of notch effect on endurance strength was increased after laser treatment of composites with 2.5% volume fraction and the reduced was by about 39.698% at 2J laser energy.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar A.. 2020. Effect of laser shock peening on fatigue stress concentration of polyester reinforced by Al-Micro powder composites. Engineering and Technology Journal،Vol. 38, no. 3A, pp.325-334.
https://search.emarefa.net/detail/BIM-948637

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar A.. Effect of laser shock peening on fatigue stress concentration of polyester reinforced by Al-Micro powder composites. Engineering and Technology Journal Vol. 38, no. 3A (2020), pp.325-334.
https://search.emarefa.net/detail/BIM-948637

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar A.. Effect of laser shock peening on fatigue stress concentration of polyester reinforced by Al-Micro powder composites. Engineering and Technology Journal. 2020. Vol. 38, no. 3A, pp.325-334.
https://search.emarefa.net/detail/BIM-948637

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references : p. 333-334

رقم السجل

BIM-948637