جامعة بلاد الرافدين - Bilad Alrafidain University

ا.م.د. عبد الوهاب محمد عبد الله جاسم

Assist. Prof. Dr. Abdulwahabe Mohammed

عميد : هندسة تقنيات الطيران

Dean : DEPARTMENT OF AERONAUTICAL ENGINEERING TECHNIQUES

دكتوراه هندسة ميكانيكية

PhD in mechanical engineering

dr.a.w.mohammed@bauc14.edu.iq

a.w.mohammed54@gmail.com

Research

	2024	Tikrit journal of engineering sciences
"In this study, the fatigue life of aluminum alloys (7001-T6) was predicted with shot peening at various temperatures. Surface treatment with shot peening steel balls is a mechanism for reducing damage. An experimental investigation was conducted to find the degree of fatigue accumulation for AA7001-T6 under rotational bending loading and stress ratio R = −1. The experiments were conducted at RT (25 ℃), 330 ℃, and SP + 330 ℃ temperatures. A modified damage stress model that considers damage at various load levels was recommended for forecasting the fatigue life under high temperatures. The model and experimental results were compared to determine the most damage (Miner’s rule). The experimental results of the fatigue life indicated that the increased testing temperature reduced the fatigue life. However, using shot peening at high temperatures increased the fatigue life by 8% when loading sequence L-H and 10% when loading sequence H-L. The results showed a satisfactory degree of safety for the present model. Nevertheless, Miner’s model featured two models: one for low– high loading and high-low loading. The results were proper for prolonging fatigue life."

	2024	Journal of Advanced Research in Applied Mechanics
"In this study, three conceptual designs of bracket constructions made of aluminum alloy underwent numerical investigation. To analyze the von Mises stresses, present throughout the entire structure, the Ansys program was employed in conjunction with the static structure tool. The selection criteria are determined by two primary elements. The first element is the performance of the design, represented by normal stresses and deformation resulting from the applied load. The second criterion is volume, dependent on the volume itself, represented by a certain density of metals. To select an appropriate design for the aluminum brackets, the procedure was carried out utilizing the Analytic Network Process (ANP) technique. Through the conceptualizing approach, it has been demonstrated that the second design is superior to the alternative."