【标题】BIZ: Restructure/Investment/Manufacture TECH: Chassis/Body & Cab Components: Composs is a new brand name for composite material solutions from Frasle Mobility
【参考中译】商业：重组/投资/制造技术：底盘/车身和驾驶室部件：Composs是Frasle Mobility复合材料解决方案的新品牌
【类型】 期刊
【作者】 Jim Gibbins
【摘要】 Brazil - Frasle Mobility, a new business unit of Fras-le S.A. of Caxias do Sul, part of Empresas Randon S.A. which offers components and services for the automotive segment, has developed a new brand called Composs. The move represents an evolution of the Smart Composites brand, launched in 2021, to enable new technologies focused on structural composite materials for the Latin American market. The brand is being launched officially this month at Automec 2023, one of the biggest events in the automotive sector in Latin America, when two products are to be introduced to market - one being a fender or bumper support structures for heavy commercial vehicles and trailers and the other being a light structure for trucks.
【参考中译】 巴西--南卡西亚斯的Fras-le S.A.的新业务部门Frasle Mobility开发了一个名为Composs的新品牌。Frasle Mobility是Empresas Randon S.A.的一部分，为汽车领域提供零部件和服务。此举代表着Smart Composites品牌的演变，该品牌于2021年推出，旨在为拉美市场提供专注于结构复合材料的新技术。该品牌将于本月在拉丁美洲汽车业最大的活动之一Automec 2023上正式发布，届时将向市场推出两种产品-一种是重型商用车和挂车的翼子板或保险杠支撑结构，另一种是卡车的轻型结构。
【来源】 Truck & Bus Builder 2023, vol.45, no.4
【入库时间】 2023/9/27
【标题】Influence of encapsulate material thickness and its thermal conductivity on solidification time of phase change material in spherical capsule for cool thermal storage - A novel correlation
【参考中译】包覆材料厚度及其导热系数对蓄冷球形胶囊相变材料凝固时间的影响--一种新的关联式
【关键词】 Solidification time correlation; Inward solidification; Outward solidification; Thermal resistance analogy; Parametric study; Cool thermal energy storage
【参考中译】 凝固时间关联；内向凝固；外向凝固；热阻比拟；参数研究；蓄冷
【作者】 Kaiwalya Raj; Pandiyarajan Vellaichamy; Meenakshi Chaturvedi; Velraj Ramalingam
【摘要】 Buildings account for 39% of global GHG emissions. In any building, space cooling/heating consumes the maximum electricity. Recently, encapsulated phase change materials (PCMs)-based cool thermal energy storage (CTES) systems have gained huge attention due to its numerous advantages in meeting building space cooling demand. Energy is stored inside these capsules in the form of latent heat. Considering the relevance of PCM solidification in capsules, two novel correlations are proposed to determine the inward and outward solidification time of phase change material (PCM) inside/around a spherical capsule based on its thermal conductivity and thickness. Further, an experimental investigation is also performed to validate the correlation. The correlation agrees closely to the experiment with a maximum inaccuracy of around 6.6%. Thereafter, a parametric analysis is also carried out to analyse the impact of both the parameters on inward solidification time of PCM. The results showed a significant reduction in solidification time up to a capsule thermal conductivity value of 0.3 W/mK. Beyond 10 W/mK thermal conductivity, capsule thickness did not affect solidification. The incorporation of these correlations into software will benefit engineers working in the fields of CTES, refrigeration, food processing, and plastics industries.
【参考中译】 建筑物排放的温室气体占全球排放量的39%。在任何建筑中，空间制冷/供暖都消耗最大的电力。近年来，基于包裹式相变材料的蓄冷系统因其在满足建筑空间供冷需求方面的诸多优势而受到广泛关注。能量以潜热的形式储存在这些胶囊内。考虑到相变材料在胶囊中凝固的相关性，提出了两个新的关联式来确定相变材料(PCM)在球形胶囊内和胶囊周围的内、外凝固时间。此外，还进行了实验研究，以验证这种相关性。这种关联式与实验非常吻合，最大误差约为6.6%。在此基础上，进行了参数分析，分析了这两个参数对相变材料内凝固时间的影响。结果表明，在胶囊导热系数为0.3W/mK时，固化时间显著缩短。超过10W/mK的导热系数时，胶囊厚度不影响固化。将这些相关性合并到软件中将使CTES、制冷、食品加工和塑料工业领域的工程师受益。
【来源】 International Communications in Heat and Mass Transfer 2023, vol.145, no.Pt.A
【标题】Observation of Material Removal by a Single Electrical Discharge: Consideration of Material Properties and Carbon Layer Forming Process
【参考中译】单次电火花材料去除的观察：材料性能和碳层形成过程的考虑
【关键词】 Electrical discharge machining; Carbon adhesion; Copper electrodes
【参考中译】 电火花加工.碳结合.铜电极
【作者】 Yoshiki Tsujita; Takayuki Tani; Hiromitsu Gotoh; Atsutoshi Hirao; Naotake Mohri
【摘要】 Electrical discharge machining (EDM) proceeds by the accumulation of series of single discharges. By combining a band-pass filter and a laser beam, we have constructed a system for observing the discharge gap phenomena in more detail by using the high-speed camera equipped with high-magnification optical lens and we have used this system to observe material behavior during a single discharge. In the present study, single discharge experiments were conducted on steel, zinc alloy, tungsten, copper, and titanium, and the behavior of each of these materials on positive polarity side was examined. With some of these materials, the workpiece was found to be intermittently removed during a single discharge. The mechanism of carbon adhesion to copper is discussed by comparing the contact area between the arc plasma and the workpiece and the size of the discharge crater.
【参考中译】 电火花加工是通过一系列单次放电的累积来进行的。将带通滤光片和激光光束相结合，利用配备高倍率光学镜头的高速摄像机，构建了一个更详细地观察放电间隙现象的系统，并利用该系统观察了单次放电过程中的材料行为。在本研究中，对钢、锌合金、钨、铜和钛进行了单次放电实验，考察了这些材料在正极一侧的行为。对于其中的一些材料，发现在一次放电过程中，工件被间歇性地移除。通过比较电弧等离子体与工件的接触面积和放电凹坑的大小，探讨了碳在铜表面的附着机理。
【来源】 International Journal of Electrical Machining 2023, no.28