Acquisition of High-Rate Loading and Damage Characterization Equipment for Advanced Materials Research and Education

采购用于先进材料研究和教育的高速加载和损伤表征设备

• 批准号: 0216686
• 负责人: Alan Kallmeyer
• 金额: $ 8.25万
• 依托单位: North Dakota State University Fargo
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216686&HistoricalAwards=false
• 关键词: Acquisition; Rate; Loading; Damage; Characterization

This grant supports equipment needed for characterizing mechanical behavior of advanced structural materials, specifically in the areas of dynamic, high-rate fracture characterization and damage detection. The equipment consists of (1) a Dynatup instrumented low/high-velocity impact test system with an integrated environmental chamber and (2) a Panametrics ultrasonic scanning system. When integrated with the existing facilities, these instruments provide a direct and immediate benefit to faculty and graduate and undergraduate students in the Mechanical Engineering and Civil Engineering Departments in their materials-related research and education activities. The equipment will be integrated into several courses at both the undergraduate and graduate levels providing hands-on training and exposure to advanced materials characterization and evaluation methods. A significant area of concern when designing advanced structural materials for critical components is their durability and damage tolerance under a variety of loading and environmental conditions. The survivability of advanced materials must be fully understood before they can be utilized. Impact events, including high-velocity loading (ballistic projectiles) and low-velocity events (e.g., tool drops, bird strikes, hail damage, etc.) are of particular concern, as they can cause damage not visible on the surface, but which can result in significant degradation of performance. Full characterization of the response of materials to impact loading requires the capacity to experimentally generate controlled impact conditions as well as the ability to quantitatively measure the extent and growth of internal damage resulting from this dynamic form of loading.

该拨款支持表征先进结构材料的机械行为所需的设备，特别是在动态、高速断裂表征和损伤检测领域。该设备由 (1) 带有集成环境室的 Dynatup 仪表化低/高速冲击测试系统和 (2) Panametrics 超声波扫描系统组成。当与现有设施集成时，这些仪器为机械工程和土木工程系的教师、研究生和本科生的材料相关研究和教育活动提供了直接和直接的好处。该设备将被整合到本科生和研究生级别的几门课程中，提供实践培训和先进材料表征和评估方法的接触。为关键部件设计先进结构材料时，一个重要的关注领域是它们在各种负载和环境条件下的耐用性和损伤容限。在使用先进材料之前，必须充分了解其生存能力。冲击事件，包括高速载荷（弹道弹丸）和低速事件（例如工具掉落、鸟击、冰雹损坏等）尤其值得关注，因为它们可能造成表面上不可见的损坏，但可能会导致性能显着下降。材料对冲击载荷响应的全面表征需要能够通过实验产生受控冲击条件，以及定量测量这种动态载荷形式造成的内部损坏的程度和增长的能力。