Nondestructive Strength and Rehabilitation Assessment of Wood-Based Structures

木结构的无损强度与修复评估

• 批准号: 8620458
• 负责人: Andrew Stewart
• 金额: $ 17.69万
• 依托单位: Engineering Data Management. Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-02-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8620458&HistoricalAwards=false
• 关键词: Nondestructive; Strength; Rehabilitation; Assessment; Wood

Phase I developed methods for reliably assessing the bending strength of in-situ wood members will be refined using nondestructive evaluation (NDE) procedures involving spectral analysis of stress-wave parameters. Phase I research has verified the feasibility of this NDE technique. Phase II research will enable detailed refinement of the NDE method ultimately leading to commercial NDE devices for in-situ testing of wood members. Currently, no reliable methods exist which can accurately define the strength of individual wood beams. Phase I research has provided a highly accurate NDE method to predict the in-site strength of individual beams. Successful refinement of this technique is anticipated for the Phase II research. Such procedures will improve the efficient utilization of critical wood resources.

第一阶段开发了可靠地评估原位木材构件抗弯强度的方法，将使用包括应力波参数谱分析的无损评估（NDE）程序进行改进。第一阶段的研究已经验证了这种濒死体验技术的可行性。第二阶段的研究将对无损检测方法进行详细的改进，最终开发出用于木材构件原位测试的商用无损检测设备。目前，没有可靠的方法可以准确地确定单个木梁的强度。第一阶段的研究提供了一种高度精确的无损检测方法来预测单个梁的现场强度。预计第二阶段的研究将成功改进该技术。这些程序将提高关键木材资源的有效利用。