PART 1 (35 MARKS) A pressure vessel is a specialized container designed to hold gases or liquids at significantly high pressures from the ambient pressure. These vessels play a critical role in numerous industrial processes, where containing substances at elevated pressures is essential for chemical reactions, material processing, storage, and transportation. The pressure vessels are engineered with specific materials and construction techniques to safely contain substances under high pressures and varying temperatures without deformation or rupture. Their design and construction adhere to stringent standards and regulations to ensure safety, reliability, and performance. Their fabrication involves intricate processes and stringent quality control measures to ensure structural integrity and operational safety. Question 1: Characteristics of Metals and Alloys (9 marks) a. Name THREE common metals or alloys commonly used in the fabrication of pressure vessels. b. Discuss their essential characteristics of the metal for pressure vessel construction. Highlight why these properties are crucial for a pressure vessel. Question 2: Processing Techniques (12 marks) a. Explain THREE manufacturing processes involved in fabrication of a pressure vessels (from metals/alloys). Hint: Elaborate on specific techniques used for shaping and joining materials to ensure structural integrity and reliability under pressure. Question 3: Applications Across Industries (10 marks) a. Explain how the properties of selected metals/alloys enable pressure vessels to be utilized in the industries, emphasizing the importance of material selection for different applications. b. Do a comparison for a pressure vessel used in oil and gas industries and a food processing industry. Support your analysis with examples and references. Make sure to cite your sources of references. (4 marks) 20:13 Wed, 17 Jan < BMIG BMFG 1213 Engineering Materials - Assignment- PART 2 (35 MARKS) Plastic bottles are typically used to store any type of liquids such as laundry detergent, drinking water, personal care products, and baby milk (Figure 1). According to a study, it is estimated that 500 billion plastic bottles are being used each year and on average, one person uses 156 plastic bottles per year. DYNAMO ELVIVE Figure 1. Examples of common plastic bottles Polymers that are commonly used to make these bottles and their properties are listed in Table 1. The choice of polymer is often dictated by a number of factors such as the material properties, visual appeal, intended use or service condition, and processing costs. Table 1. Common polymers used to make plastic bottles Tensile Strength Elongation at Break Ave. Melting Point Polymer Material Mpa % C Transparency Opaque-Translucent-Transparent Max. Service Temp. C Price RM/kg Processing Temp. "C Low Density Polyethylene (LDPE) 10.8 322 113 Opaque to translucent 100 1.43 174 High Density Polyethylene (HDPE) 29.3 709 128 Opaque 120 2.921 199 Polyethylene Terephthalate (PET) 62.4 67.2 246 Translucent to transparent 140 2.20 219 Polypropylene (PP) 29.3 162 100 Polycarbonate (PC) 64.2 85.7 Opaque to translucent Transparent 130 2.92 210 140 6.30 281 Question 1: Characteristics of Polymers (12 marks) a. From the list in Table 1, name ONE polymer that is commonly used in the production of each bottle showed in Figure 1. b. Discuss what are the essential required characteristics of each application and highlight why the chosen materials are suitable based on their properties and costs. Question 2: Processing Technique (9 marks) a. Explain ONE manufacturing process that is considered to be the most suitable for plastic bottles production. Your answer should be logical considering the material and economic factors. Question 3: Applications Across Industries (10 marks) a. The packaging segment in personal care industries such as shampoo used to be dominated by high density polyethylene (HDPE) bottles. However, recently more and more companies are switching to polyethylene terephthalate (PET) due to material cost and visual appeal advantages. Despite the advantages offered by PET, discuss THREE remaining challenges when switching from HDPE to PET. Support your analyses with relevant examples and references. Make sure to cite the sources of the references. (4 marks) 8 +. 89% UTeM UNIVERSITI TEKNIKAL MALAYSIA MELAKA FAKULTI TEKNOLOGI DAN KEJURUTERAAN INDUSTRI DAN PEMBUATAN ASSIGNMENT ASSESSMENT FORM Subject Code BMIG 1213/BMFG 1213 Subject Name Session,Semester ENGINEERING MATERIALS SEMESTER I, SESSION 2023-2024 Name of Student Matrix No. (1) (2) (3) (4) (5) BMKU BMKK BMIF BMIG BERG BELG BELM Learning Outcomes Program Outcomes L03 Analyze the processing methods for engineering materials. P02 Able to identify, formulate, research literature and analyze complex engineering problems reaching substantiated conclusions using first principles of mathematics, natural sciences and engineering sciences. PART 1 Component Excellent (4) Question 1: Understanding of materials' properties (9 marks) WPI Depth of knowledge Able to identify THREE common metals and their properties according to the scenario given Thorough analysis of materials characteristics, linking them to relevant examples. Needs Weightage Marks Good (3) Fair (2) Improvement (1) Clear explanation of Basic understanding Limited materials properties, with some relevant of materials properties, with minimal examples. understanding of materials 0.75 examples properties, lacking examples WP2 Conflicting Able to relate microstructures and requirements mechanical properties of microstructures and common metals comparison of metal Able to make alloys based on microstructure and pressure vessel for various functions Comprehensive explanation of their impact on mechanical properties. In-depth comparison of various alloys physical and Adequate explanation of microstructures and their impact on properties. Clear comparison of alloys' physical and mechanical properties Basic understanding of microstructures impact on properties Basic comparison of alloys' physical and mechanical properties Limited or inaccurate understanding of microstructures impact on properties Limited or incorrect comparison of alleys' physical mechanical properties 1.0 0.5 mechanical properties for mechanical properties. Question 2: Processing Techniques (12 marks) WP3 Depth of analysis Able to explain THREE fabrication methods Able to make suggestions on the application and impact to the fabrication process Able to consider environmental/economic impact of fabrication methods Detailed overview of fabrication methods used in pressure vessel construction. Comprehensive discussion on the applications and impact of specific techniques. Thorough analysis of environmental and economic impact of fabrication methods Question 3: Applications across industries (10 marks) WP6 Extent of stakeholder (varying needs) Able to differentiate function of pressure vessel in different industry applications Comprehensive exploration of diverse industry applications of pressure vessels. Clear explanation of fabrication methods linking them to pressure vessel construction. Adequate exploration of technique applications and impact on vessel fabrication Some consideration of environmental and economic impact of methods. Clear understanding of industry applications, linking them to vessel utility Basic explanation of fabrication methods, with minimal linkage to vessel construction Basic exploration of technique applications, with limited impact discussion. Basic consideration of environmental and economic impact. Basic understanding of industry applications, with minimal linkage to vessel utility Inadequate or inaccurate explanation of fabrication methods used in pressure vessel construction. Limited or incorrect exploration of technique applications and their impact on fabrication Limited or no 0.75 13 1.5 consideration of environmental and economic impact. 0.75 Limited understanding of industry applications, lacking linkage to 1.0 4/7 20:16 Wed, 17 Jan < BMIG BMFG 1213 Engineering Materials - Assignment- Able to explain material contributions to specific industry advancements Organization and references (4 marks) Organization and clarity of the assignment Use of references and citations Detailed explanation of material contributions to advancements within a chosen industry. Coherent, well- structured presentation Accurate and comprehensive use of sources, Adequate insight into material contributions, relating them to industry advancements. Clear organization and structure evident Appropriate use of references and citations, indicating demonstrating depth substantial research. of research Basic insight into material contributions, with minimal relevance to advancements. Basic organization but lacks clear structure. Adequate use of references and citations, although could be more extensive. vessel utility Limited or incorrect insight into material contributions within a chosen industry, 1.5 Disorganized presentation, lacks clarity. 0.5 Limited or improper 0.5 TOTAL (A) /35 use of references and citations, PART 2 Component Excellent (4) Good (3) Fair (2) Need Improvement Weightage Marks (1) WP1 Depth of knowledge Part 1: Understanding of material properties (12 marks) Able to propose ONE All FOUR of the suitable polymer for each proposed materials are four applications based correct and logical Only THREE of the Only TWO of the Only ONE of the proposed materials are correct and on factual research logical proposed materials are correct and logical proposed materials are correct and the other are less logical 0.75 WP2 Able to highlight the Conflicting requirements required characteristics of explanation on each application with complete Comprehensive Adequate explanation on required required characteristics characteristics with some examples Basic explanation on Limited explanation required on required characteristics with less examples characteristics with no examples 0.75 Able to relate material properties that suit the intended application Part 2: Processing Technique (9 marks WP3 Depth of analysis Able to explain ONE correct fabrication methods Able to make process suggestion based on material selection Thorough analysis of Clear explanation of material characteristics, linking material properties, with some relevant them to relevant examples examples Detailed overview of fabrication method is presented. Comprehensive discussion on the applicability of process to produce the product Clear overview of fabrication method is presented. Adequate discussion on the applicability of process to produce the product Basic understanding of material properties, with minimal examples Basic overview of fabrication method is presented. Basic discussion on the applicability of process to produce the product Limited understanding of material properties, lacking examples Inadequate overview of fabrication method is presented 1.5 0.75 Limited discussion on the applicability of process to produce 1.0 the product TOTAL (B) GRAND TOTAL (A+B/7) 135 /10 6/7 5/7 till 88% 0 :