Study on Prediction of Roof Rack Performance using Data Learning Finite Elements Analysis Technique

Gyuho Shim･Jongheon Lee･Teawon Kim (SECO ECOPLASTIC)

The static load analysis to verify the performance of the aluminum roof rack was performed using data analysis techniques to predict displacement. The evaluation method was to apply a load toward the upper part of the vehicle as one of the lift tests and measure the elastic deformation and permanent deformation after maintaining it for a certain period of time. The analysis data analysis was analyzed. A verification test was conducted to verify the predicted results and compared them with the predicted analysis results. In this way, the reliability of the analysis and test was secured, and the performance of the aluminum integrated roof rack was finally predicted using data analysis techniques. It is believed that it can partially replace tests in the design and development of roof rack products.

Manufacturing Process Technology for LiDAR Covers with Self-Healing

Wanho Son･Teawon Kim･Gyeomson Seong (SECO ECOPLASTIC)

The cover that protects the LiDAR system, a key component in autonomous vehicles, requires high transmittance and durability. Conventional LiDAR covers have the issue of transmittance dropping below 30% when surface damage occurs. This paper presents a technological approach using self-healing polyurethane reaction injection molding, which is more environmentally friendly, offers superior surface quality, and allows for greater thickness compared to conventional spray coating methods. This technology is expected to protect LiDAR covers from damage, thereby contributing to the reliability and stability of autonomous vehicles.

Study on Plastic Materials for FCEV Thermal Management System Components : Comparative Analysis of PA and PP

HYEONGWON PARK･KYUNGHWAN OH･MINGYUN CHUNG･TAEGEUN KIM･KYEONGJUN BAEK･WOOKIL JANG･CHULWAN PARK･JIHYUN LEE･SOOHWAN KIM (Hyundai Motor)

This study investigates the changes in requirements for thermal management systems as vehicles transition from ICE to FCEV. It focuses on plastic materials suitable for FCEVs, considering the potential replacement of traditional PA materials with PP materials. The research evaluates long-term aging and lifespan under antifreeze and heat, safety concerning heating components, and ion leaching properties necessary for maintaining ultra-low conductivity in antifreeze. The findings provide insights into the feasibility of using PP materials in FCEV thermal management systems.

非線形性をもつ自動車シート用ウレタンフォームの動的粘弾性測定

神尾　ちひろ・朝倉　励・山口　誉夫・丸山　真一（群馬大学）・花輪　和人・岩瀬　勉・香西　俊彦（SUBARU）・林　達郎・佐藤　利春・茂川　創（日本発条）

乗員が直接触れるシートの特性は自動車の乗り心地に大きな影響を与える．ウレタンフォームは弾性特性と粘性特性のどちらも持ち合わせており，さらにその特性は周波数や温度によって変化する．本研究では，乗員がシートに座った実使用時を想定した圧縮状態でのウレタンフォームの非線形粘弾性を測定した．