Specimen with rectangular cross-section usually used to measure the tensile properties of materials. However, the specimen size and thickness may affect the results. In this study, tensile and fracture behaviours of very thin 304 stainless steel sheet were investigated. The thickness of the stainless steel sheets investigated were 100 and 300 µm. Tensile samples were cut into dumbbell-shaped of rectangular cross-section with same width for both thickness according to ASTM E8. The results showed that 100 µm thin steel sheet exhibited higher tensile strength with no clear evidence of yielding as compared to 300 µm sheet. The fracture morphology images observed by scanning electron microscopy revealed that both specimens fracture in ductile mode. Formation of dimples on the fracture surface could be recognized easily in 300 µm sample at higher magnification as compared to 100 µm sample.
Several environmental impact assessments (EIAs) have been conducted since the petroleum ındustry environmental guidelines and standards were issued in 1991. Thus, EIA has become a standard practice in environmental planning for various project operations and activities. However, studies indicate that little has been achieved regarding environmental management in Iraq's oil industries. The reason for this is the reluctance of institutions to adopt environmental management systems, either due to the scarcity of basic information through which environmental impacts are measured, or the lack of financial allocations to implement mitigation measures and control plans, or the lack of human resources and the lack of political commitment to implementing environmental management plans .This research aims to assess the environmental impact of the East Baghdad field in the Midland Oil Company, by identifying a number of indicators that have been selected in proportion to the nature of the company's work. A rapid impact assessment matrix was used, which includes a set of components (physical and chemical, environmental and biological, social and cultural, economic and operational) and for each component a set of sub-indicators that ultimately indicate the environmental degree of environmental impact. Accordingly, the research reached a group of results, the most important of which is the presence of serious negative environmental impacts in the field site and the operations and activities related to it, such as soil and air pollution, obsolescence of equipment and scarcity of technology with a percentage of 70.8%, while the positive effects amounted to 25% only, which predicts an environmental deterioration in the company's work sites.
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