จำนวน Repository ( 2 )

การวัดสมรรถนะของคณะวิศวกรรมศาสตร์มหาวิทยาลัยเทคโนโลยีราชมงคลพระนครสู่การเป็นมหาวิทยาลัยดิจิทัล
การวัดสมรรถนะของคณะวิศวกรรมศาสตร์มหาวิทยาลัยเทคโนโลยีราชมงคลพระนครสู่การเป็นมหาวิทยาลัยดิจิทัล

The objective of this research work was to arrange a performance measurement for finding factors which will have influence on the capacity of Faculty of Engineering Rajamangala University of Technology Phra Nakhon leading it to become a digital university. The results of making a survey on the data from the personnel of the Faculty of Engineering showed that: the factor that had the most influence on the capacity of the Faculty of Engineering Rajamangala University of Technology Phra Nakhon was the factor of knowledge and attitudes (the mean was 3.61 which stood at the level of comments very); regarding the level of comments this was followed by the factor that had influence on the capacity of the Faculty of Engineering in terms of the environment in the organization (the overall mean was 3.49 which stood at the level of comments moderate); the factor that had influence on the capacity of the Faculty of Engineering in terms of participation came in the last place (the mean was 3.41 which stood at the level of comments moderate). The basics results obtained from this research work will be partly used as an approach to help improve the processes of the Faculty of Engineering. This will support stepping into becoming a digital university in the future.

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การเปรียบเทียบค่าความสัมพันธ์ระหว่างความเค้นและความเครียดที่ได้จากการทดสอบแบบเป่าโป่งด้วย น้ำกับการทดสอบแบบแรงดึงแกนเดียวของสแตนเลส SS304
การเปรียบเทียบค่าความสัมพันธ์ระหว่างความเค้นและความเครียดที่ได้จากการทดสอบแบบเป่าโป่งด้วย น้ำกับการทดสอบแบบแรงดึงแกนเดียวของสแตนเลส SS304

The purpose of this research is to find the relation between stress and strain called as the Flow Stress Curve for 0.4 mm thickness stainless steel (SS 304). Two main methods are used: the Uniaxial tensile test and the Hydraulic Bulge Test (HBT). The relation between stress and strain from both methods would then be compared and simulated into cubic-shaped models by using Finite Element method. Results show that sheet metal formation simulated by using the flow stress curve obtained from Hydraulic bulge test can have the height of up to 40 millimeters before the work piece starts to lacerate. On the other hand if the flow stress curve obtained from Uniaxial tensile test is used the work piece will only be able to form about 15 millimeters before lacerating. The preliminary summary for this research can be said that the analysis for Hydraulic bulge test gives better results than Uniaxial tensile test as it has similar conditions to the actual formation process.

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