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An Investigation of estimated Mechanical Properties of AL-Alloys 6061-T6, which is one of the most commonly used in industrial applications, has been established experimentally. A new novel Plasma Peening techniques had been applied for the whole surfaces of the material by CNC-Plasma machine for 48 specimen, and then a new investigation were takeover to figure the amount of change in mechanical properties and estimated fatigue life. It was found that improvement was showing a nonlinear behavior according to peening duration time, speed, peening distance, peening number, and amount of effected power on the depth of the material thickness. The major improvement was at medium speed long duration time normal peening distance. Which shows up to 4 times improvements than the others cases. It was found that reducing in elongation of about 25% from references for 1x plasma peening for the most techniques used while a reduction in elongation of 31% for the two time plasma peening, on the other hand increment of 10% in elongation for 2x plasma peening and 5% of increment for peening with 5kW of plasma power. These results illustrated in both tables and figures. Farther study may established for other AL-Alloys to study the effects of plasma peening on it and to found the most effected one of them for the completely nine AL family.

This research aims to study the effect of using the anodizing process on the corrosion rate, mechanical properties as well as the fatigue life for aluminum alloy (7075-T73), which is one of the most commonly used aluminum alloy in production of aircrafts, vehicles and ships structures. The anodizing process was employed through using sulfuric acid for time (20) min in a salty atmosphere. The mechanical properties and fatigue life of the AA7075-T73 were obtained before and after the anodizing process. All the results were listed in detailed tables and figures for comparison purpose. Generally, these results showed a decrease in corrosion rate by (155.06%) in comparison with untreated, an increase in hardness by (21.54%) and a slight decrease in fatigue life by (7.7%) due to anodizing for a time of 20 min at the stress level of (σa = 491.10 MPa). It was concluded that this technique could be applied on other aluminum alloys in order to know the magnitude of change in the mechanical characteristics and their fatigue life.

An Investigation of estimated Mechanical Properties of AL-Alloys 2024-T3, which is the most commonly used in industrial applications, been established experimentally. A new novel Plasma Peening techniques had applied for the whole surfaces of the material by CNC-Plasma machine for 48 specimen, and then a new investigation were toke over to figure the amount of change in mechanical properties and estimated fatigue life. It found that improvement was showing a nonlinear behavior according to peening duration time, speed, peening distance, peening number, and amount of effected power on the depth of the material thickness. The major improvement was at medium speed long duration time normal peening distance. Which shows up to 5 times improvements than the others cases. It was found that reducing in elongation of about 32% from references for 1x plasma peening for the most techniques used while a reduction in elongation of 56% for the 2x plasma peening. These results illustrated in both tables and figures. Farther study may established for other AL-Alloys to study the effects of plasma peening on it and to found the most effected one of them for the completely nine AL family.

One of the main requirements of the truck tire sidewall are flexing resistance, tensile strength and tear resistance, as well as resistance to weather conditions experienced by tires during use, which include exposure to sunlight and ultraviolet radiation. Therefore, the requirements and changing circumstances led to develop the design parts of tires, and sidewall is more susceptible to these conditions, where it will be studying the properties of truck tire sidewall produced by Al-Dewaniya Tires Factory-Iraq, according to the specifications designed by Italian Perilli Co. since about 20 years ago, which prompted to development the mechanical and physical properties of those components.The present work aim to design stocks with high specifications, through the study of the impact of the substantial material (rubber) in truck tire sidewall recipe. Natural rubber, Standard Vietnam Rubber (SVR5) and synthetic rubber, Styrene-Butadiene-Rubber(SBR1502),also the introduction of a new type of synthetic rubber is Poly Butadiene (BRcis), filled with carbon black (N550) as a reinforcement agent with fixed loading percentage (51pphr),as well as other components such as accelerators, antioxidants, anti-ozonants and vulcanizing agent. Through laboratory testing found that stocks containing (NR/SBR/BRcis) blending with (40/60/-), (40/50/10) and (40/40/20) as a percentage loading has given good results in many tests including tensile, tear, compression, hardness and fatigue crack growth resistance.