【标题】TOPPLING INTEGRITY: the domino effect of inaccurate material verification
【参考中译】令人惊叹的完整性：材料验证不准确的多米诺骨牌效应
【类型】 期刊
【作者】 anonymous
【摘要】 Dr James Dean, CEO, Plastometrex, details the growing importance of accurate material verification in ensuring the safety and integrity of pipelines, a critical component of pipeline management in light of recent regulations. Accurate verification of pipeline material properties is essential for ensuring the integrity of North America's oil and gas transmission pipelines. Its importance is underscored by United States Pipeline and Hazardous Materials Safety Administration's (PHMSA) recent Mega Rule legislation, which mandates testing of undocumented pipelines for reconfirmation of maximum allowable operating pressure (MAOP). Given that MAOP is dependent upon the grade of metal used, which can often be determined from accurate determination of yield stress (among other characteristics), material verification has become an increasingly important component in the integrity management programmes of pipeline owners and operators.
【参考中译】 Plastometrix首席执行官James Dean博士详细介绍了准确的材料验证在确保管道安全性和完整性方面日益重要的意义，这是根据最近的法规，管道管理的一个重要组成部分。准确验证管道材料性能对于确保北美石油和天然气输送管道的完整性至关重要。美国管道和危险材料安全管理局（PHMAS）最近的大型规则立法强调了其重要性，该立法要求对无证管道进行测试，以重新确认最大允许操作压力（MAOP）。鉴于MAOP取决于所用金属的等级，而金属的等级通常可以通过屈服应力（以及其他特征）的准确确定来确定，因此材料验证已成为管道所有者和运营商完整性管理计划中日益重要的组成部分。
【来源】 World pipelines 2024, vol.24, no.11
【入库时间】 2025/4/2
【标题】Experimental Thermal Analysis of Temperature Rise inside the Vehicle with and without I-Cool Materials
【参考中译】有和不有I-Cool材料的车辆内部温度上升的实验热分析
【关键词】 Human comfort; Thermal analysis; Phase change materials; Solar energy
【参考中译】 人体舒适度;热分析;相变化材料;太阳能
【作者】 Swanand Kirpekar; Sachin Patil; Rahul Yadav; Amit Desale; Nishant Sukalkar; Padmayya Naik
【摘要】 As India is a tropical country, where summertime temperatures can reach 45℃ in such a condition car is parked for few hours then interior temperature can reach 70℃. There are numerous examples around the world where a child or pet died due to thermal discomfort and heat stroke due to left inside a parked car. The temperature rise is analysed with theoretical, experimental and CFD analysis. During the all-thermal analysis 20℃ to 25℃ temperature rise is observed inside the parked vehicle. To resolve this problem in this research paper focusing on one of the I-Cool material such as phase change material with high thermal conductivity that have ability to absorb more latent heat. The two types of phase change materials such as OM30 and HS29 are utilized in between roof, upholstery and in door panel. The inside temperature rise is controlled by 10℃ to 11℃ after using both materials.
【参考中译】 由于印度是一个热带国家，夏季温度可以达到45℃，在这种情况下，汽车停放几个小时，内部温度可以达到70℃。世界各地有许多例子，儿童或宠物因热不适和中暑而死亡，原因是留在停放的汽车内。通过理论、实验和CFD分析对温升进行了分析。在全热分析过程中，观察到停放车辆内部温度升高20℃至25℃。为了解决这个问题，本研究论文重点研究了I-Cool材料之一，例如具有高导率、能够吸收更多的潜在热量的相变化材料。OM 30和HS 29这两种类型的相变化材料用于屋顶、室内装饰和门板之间。两种材料使用后，内部升温控制在10℃至11℃。
【来源】 International Journal of Vehicle Structures and Systems 2024, vol.16, no.5
【标题】Optimizing Crash Box Design for Enhanced Vehicle Crashworthiness: A Study on Screw-in-the-Groove Mechanism and Al5052 Material Thickness Variations
【参考中译】优化碰撞盒设计以提高车辆耐撞性：螺旋槽机构和Al 5052材料厚度变化的研究
【关键词】 Crashworthiness; Hypermesh; LS dyna profile; Al5052; Crash box plate
【参考中译】 耐撞性; Hypermesh; LS动力剖面; Al 5052;碰撞箱板
【作者】 R. Teddy Samuel; M. Jaikumar; S. K. Vignesh; Felix Bentgens
【摘要】 This paper delves into the realm of crashworthiness, a critical aspect of vehicle design aimed at enhancing occupant protection and minimizing fatalities and vehicle damage. The study focuses on the force required for a single screw in a crash box, employing a unique screw-in-the-groove mechanism and varying thicknesses of Al5052 material. The investigation utilizes Hypermesh in LS Dyna Profile to simulate low-speed crash scenarios, providing valuable insights into the rupture dynamics. In this research initiative, chosen crash box plates were selected for simulation, exploring and substantiating the innovative concept, specifically focusing on validating the optimized thickness as part of our primary research efforts. The crumple bar assembly incorporates a longitudinally oriented groove situated in the central section of the crash box plate. Within this groove, a latitudinal fixed screw with precise dimensions and locking mechanisms was housed. The simulation parameters are defined with an impact velocity of 15 km/h and a 350 kg mass acting on the screw in the groove of the crash box plates. A meticulously optimized criterion ensures that the screw's travel distance remains below 130mm during the simulation. The model setup includes pre-calculations, pre-simulation for groove stamping, stamp geometry and crash simulation. The Standard Vehicle Testing Procedure was followed in accordance with the Research Council for Automobile Repairs. Results from the simulation for thicknesses of 2, 2.5, 3, 3.5 and 4 mm were systematically analysed. The findings reveal a nuanced relationship between thickness and the performance metrics such as displacement and internal energy absorption.
【参考中译】 本文探讨了耐撞性领域，这是车辆设计的一个关键方面，旨在加强对乘客的保护并最大限度地减少死亡和车辆损坏。该研究的重点是碰撞盒中单个螺丝所需的力，采用独特的螺旋槽机构和不同厚度的Al 5052材料。该调查利用LS Dyna Profile中的Hypermesh来模拟低速碰撞场景，为破裂动力学提供有价值的见解。在这项研究计划中，选择了选定的碰撞盒板进行模拟、探索和证实创新概念，特别侧重于验证优化的厚度，作为我们主要研究工作的一部分。抗压杆组件包含位于碰撞箱板中心部分的纵向凹槽。在这个凹槽内，装有一个具有精确尺寸和锁定机构的纬向固定螺丝。模拟参数定义为15 km/h的冲击速度和作用在碰撞箱板凹槽中的螺丝上的350 kg质量。精心优化的标准确保在模拟过程中螺丝的行程距离保持在130 mm以下。模型设置包括预计算、凹槽冲压预模拟、印章几何形状和碰撞模拟。根据汽车维修研究委员会的规定，遵循标准车辆测试程序。系统分析了2、2.5、3、3.5和4 mm厚度的模拟结果。研究结果揭示了厚度与位移和内部能量吸收等性能指标之间的微妙关系。