• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Nondestructive Testing of Wood; 20000913-20000915; Sopron; HU >Wood inspection by thermography
【24h】

Wood inspection by thermography

机译：木材热成像检查

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Thermography as a possible tool of nondestructive testing of wood has been analyzed. The theoretical consideration of heat transient in wood was verified by experiments successfully, like the effect of density on surface temperature and the heat conductivity in different anatomical orientation. Two outdoor tests were carried out, to evaluate the applicability of the daily natural air temperature change as heat transient More than 0.7 ℃ temperature different was found between intact and decayed wood temperature, so this relative simple method can be a useful tool in the evaluation of old wooden structures. Similar temperature difference was found between knot and around the knot. Specimens containing cavity was used to model the decay inside the wood. The distance between cavity and surface was 3, 7.5 and 15 mm. All the three hidden defect were found by thermographic inspection. An electrical line heater used to increase the surface temperature and 2 - 9 ℃ different was found soon after the heating. Hopefully these results may contribute to an easy and reliable inspection of old wooden structures, but further field test are necessary.
机译：已经分析了热成像作为木材非破坏性测试的一种可能工具。木材中热瞬态的理论考虑已通过实验得以成功验证，例如密度对表面温度和不同解剖方向的热导率的影响。进行了两个室外测试，以评估自然空气温度每天变化作为热瞬变的适用性在完整和腐烂的木材温度之间发现超过0.7℃的温度差，因此这种相对简单的方法可以用作评估木材的温度的有用工具。旧的木结构。在结之间和结周围发现相似的温差。包含标本的空腔用于模拟木材内部的衰减。腔与表面之间的距离为3、7.5和15毫米。通过热像仪检查发现了所有三个隐藏的缺陷。加热后不久发现用于提高表面温度和2-9℃不同的电线加热器。希望这些结果可以有助于对旧的木结构进行简单可靠的检查，但是有必要进行进一步的现场测试。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号