จำนวน Repository ( 2 )
การศึกษาและพัฒนาวัสดุกันกระแทกจากเส้นใยพืชมะละกอในงาน บรรจุภัณฑ์สาหรับผลิตภัณฑ์แก้วและเซรามิค
The objective of the research is to study and develop a shock and impact absorber material. This material are make from papaya stem and to be used in glass and ceramic packaging. This research is also focus on recycling agriculture waste 1.to added value 2.minimized waste and trash and 3.support the idea of saving the environment and improve economic in community. The process of making this shock and impact absorbing material started with setting the papaya stem in to a frame shape and use natural bonding such as rubber to keep it in that shape. After that it become a shock and impact absorber sheet. The researcher chose six items as case study and they are; tall glass short glass glass doll small cup vase and ceramic doll. All these six items had to go through a standard packaging test and a satisfaction questionnaire. Papaya stem after it has been treaded and soaked in water it become a net like material and bond well with the natural bonding material. In this case it was rubber. After it dry it is soft enough to be used as glass and ceramic items yet strong enough to pass all the packaging test. These shock and impact absorber material performed well with the test and the satisfaction questionnaire and receive high score on the test in both the design and the function.
การศึกษาโครงสร้างกันแรงกระแทกของรถยนต์ด้วยวัสดุทางเลือกที่ส่งผลต่อการดูดซับพลังงาน
Nowadays an automotive industry steadily has been growing and playing a major role on economy development for many years. The crash box is one of the most important parts for safety but it was found that the crash boxes manufactured domestically are not met international standard requirements. This is due to process and material limitation. This process for automotive safety test requires high budget and there is unclear approach for specific test. Therefore a study of crash boxes referred to energy absorption project was conducted as the alternative materials for product. Consequently this project was aimed to design and test crash boxes which made from the diversity of the alternative materials such as aluminum aluminum reinforced by foam resin reinforced by fiberglass resin reinforced by water hyacinth and resin reinforced by water hyacinth and husk. In addition it was also emphasized in studying energy absorption behavior and physical deformation of crash boxes after dynamic and static energy being applied. The experimental works were applied for these tests in partly referenced to US NCAP and ECE R29 standard for automobile collision test. Testing all types of crash boxes indicated that the aluminum reinforced by foam type was able to absorb energy at 189 MJ/m3. It is higher than resin reinforced by water hyacinth and husk at 1 MJ/m3 as 188 times. Furthermore the comparison of the energy absorption (per unit volume) between the aluminum reinforced by foam type and the steel type from the previous project equivalent 20 MJ/m3 found that it is 8.45 times of difference. While the front impact test was not successful because the size of crash boxes was not suitable for the energy volume. It was a cause for non-available calculation of energy absorption value.