Mechanical and non-destructive testing of composites

复合材料的机械和无损检测

• 批准号: 529925-2018
• 负责人: Johnston, James
• 金额: $ 1.82万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=654767
• 关键词: Mechanical; non; destructive; testing; composites

SED Research is a Canadian small business which develops large satellite communication antennas comprised**of composite materials. During formation, the applied pressure and time have been recognized as critical**components in the formation of undesired pores in the satellite, which degrade mechanical properties such as**stiffness and strength. As composite materials are becoming lighter in weight and smaller (thinner) in size, the**importance of identifying the location, amount and effect of these porosities on mechanical performance is**critical for ensuring a reliable product. In addition to considering composite integrity, composites also need to**be bonded together, which can be a site of failure.**The overall goal of this NSERC Engage Grant is to aid SED Research with assessing the mechanical**properties of their composites and adhesive joints under different preparation approaches. The secondary goal**is to determine whether non-invasive testing can be used to predict said mechanical properties. To accomplish**these goals, we will perform mechanical tests using industry-standard testing protocols to measure mechanical**properties. Prior to mechanical testing, we will use non-destructive testing on the samples (high resolution**computed tomography and ultrasonic testing). Acquired outcomes from non-destructive testing will then be**related with mechanical properties, with the aim of developing non-invasive predictions of composite**mechanical properties.**Composites are gaining interest in almost every engineering structure used in Canada, ranging from aircraft**and spacecraft to automobiles and chemical processing equipment. The in-service performance of these**composites are linked to settings used in the manufacturing process. We anticipate that this study will shed**light on the links between manufacturing parameters and mechanical performance of composites, and result in**optimized manufacturing settings which will reduce imperfections and enhance performance. These results will**be beneficial in reducing the economic burden attributed to early failure of composites.

SED Research是一家加拿大小型企业，开发由复合材料制成的大型卫星通信天线。在形成过程中，施加的压力和时间已经被认为是在卫星中形成不期望的孔的关键因素，其降低机械性能，例如刚度和强度。随着复合材料的重量变得更轻、尺寸变得更小（更薄），确定这些孔隙的位置、数量和对机械性能的影响的 ** 重要性对于确保可靠的产品 ** 至关重要。除了考虑复合材料的完整性，复合材料还需要 ** 粘合在一起，这可能是一个失败的网站。该NSERC Engage Grant的总体目标是帮助SED Research评估其复合材料和粘合剂接头在不同制备方法下的机械性能。次要目标 ** 是确定非侵入性测试是否可用于预测所述机械性能。为了实现这些目标，我们将使用行业标准测试协议进行机械测试，以测量机械性能。在机械测试之前，我们将对样品进行无损测试（高分辨率 ** 计算机断层扫描和超声波测试）。从无损检测中获得的结果将与机械性能相关，目的是开发复合材料机械性能的非侵入性预测。复合材料在加拿大使用的几乎每一种工程结构中都越来越受关注，从飞机和航天器到汽车和化学加工设备。这些复合材料的使用性能与制造过程中使用的设置有关。我们预计，这项研究将揭示制造参数和复合材料的机械性能之间的联系，并导致优化的制造设置，这将减少缺陷，提高性能。这些结果将有利于减少由于复合材料早期失效而造成的经济负担。