Comparison between confined and unconfined laser peening effect on the fatigue life of composite materials

Other Title(s)

مقارنة بين تأثير العصف الليزري المخمد و غير المخمد على عمر الكلال للمواد المركبة

Joint Authors

Mutashshar, Ammar Abd al-Amir
al-Khazraji, Ahmad Nayif Ibrahim

Source

Iraqi Journal of Science

Issue

Vol. 61, Issue 7 (31 Jul. 2020), pp.1657-1664, 8 p.

Publisher

University of Baghdad College of Science

Publication Date

2020-07-31

Country of Publication

Iraq

No. of Pages

8

Main Subjects

Mechanical Engineering

Abstract EN

Mechanical Engineering Department/ University of Technology- Baghdad.

Confinement layer is considered as the most important parameter during the laser shock peening (LSP) treatment.

In this paper, its effect on the surface treatment effectivity of composite materials was investigated.

The composite used in this research was fabricated using hand lay-up as a manufacturing process.

The matrix material was built from unsaturated polyester resin and reinforced with 2.5% volume fraction of micro particles of aluminum powder.

Fatigue test was conducted at room temperature with constant amplitude stress and a stress ratio of R =-1, before and after LSP treatment.

LSP was applied with and without confinement layer at the same level of energy after the specimens were coated with a black paint.

The results manifested that the laser peening without confinement layer increased the endurance limit by about 13.296% compared with the untreated state.

Whereas using water as a confinement layer during treatment reduced the endurance strength by about 18.133% compared to the untreated state.

Also, it was observed that the difference between confined and unconfined LSP effects on the endurance limit was about 31.429%.

American Psychological Association (APA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar Abd al-Amir. 2020. Comparison between confined and unconfined laser peening effect on the fatigue life of composite materials. Iraqi Journal of Science،Vol. 61, no. 7, pp.1657-1664.
https://search.emarefa.net/detail/BIM-970117

Modern Language Association (MLA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar Abd al-Amir. Comparison between confined and unconfined laser peening effect on the fatigue life of composite materials. Iraqi Journal of Science Vol. 61, no. 7 (2020), pp.1657-1664.
https://search.emarefa.net/detail/BIM-970117

American Medical Association (AMA)

al-Khazraji, Ahmad Nayif Ibrahim& Mutashshar, Ammar Abd al-Amir. Comparison between confined and unconfined laser peening effect on the fatigue life of composite materials. Iraqi Journal of Science. 2020. Vol. 61, no. 7, pp.1657-1664.
https://search.emarefa.net/detail/BIM-970117

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 1664

Record ID

BIM-970117