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.

第一阶段开发的方法可以可靠地评估原位木材构件的弯曲强度，将使用涉及应力波参数的光谱分析的非破坏性评估（NDE）程序进行完善。 第一阶段的研究验证了这种NDE技术的可行性。 第二阶段的研究将使NDE方法详细改进，最终导致商业NDE设备用于木材成员的原位测试。 当前，尚无可靠的方法可以准确定义单个木梁的强度。 第一阶段的研究提供了一种高度准确的NDE方法来预测单个梁的现场强度。 对于II期研究，预计将成功地完善该技术。 这样的程序将改善关键木材资源的有效利用。