使用声学引导波和静态曲测试技术测量木棒的硬度比较
Adli Hasan Abu Bakar1,2, Mathew Legg1,3, Khalid Mahmood Arif1
1Colleges of Sciences, Massey University, Auckland 6330, New Zealand.
Sensors (Basel, Switzerland)
|August 28, 2025
概括
一种新的引导波技术精确地测量了木材的刚性,其性能优于传统的飞行时间 (ToF) 方法. 这种声学非破坏性测试方法为木材的动态弹性模量 (MoE) 提供了更可靠的替代方法.
科学领域:
- 木材科学与材料工程
- 声学和非破坏性测试方法
背景情况:
- 传统的机械曲测试可以确定木材的刚性 (静态弹性模量,MoE).
- 在加工之前,声学非破坏性测试 (NDT) 对于估计木材中的动态MoE至关重要.
- 目前的声学方法如共振和飞行时间 (ToF) 有局限性,ToF高估了刚度.
研究的目的:
- 引入和评估用于测量木杆硬度的引导波技术.
- 将引导波方法的精度与已建立的静态曲,声学共振和ToF技术进行比较.
- 评估引导波法作为立树和苗木度评估的改进替代方法的潜力.
主要方法:
- 测量是在辐射松木棒 (16毫米直径) 上进行的,并与乙烯酸,和钢棒进行比较.
- 该研究比较了通过静态曲测试 (黄金标准),声学共振,声学飞行时间 (ToF) 和新型引导波技术获得的刚度测量.
- 数据分析的重点是从每个方法中得出的MoE值的准确性和一致性.
主要成果:
- 与传统的ToF方法相比,引导波技术在所有测试材料中显示出更高的刚性测量精度.
- 通过 ToF 方法进行的硬度测量结果始终高估了相对于静态曲,共振和引导波方法的弹性模量.
- 引导波测量与声学共振方法的结果密切一致.
结论:
- 引导波技术显示出作为一种比传统的ToF方法更准确的NDT方法来确定木材硬度的巨大潜力.
- 这种方法为年轻树木和苗木的可靠MoE评估提供了有希望的替代方案,解决了与ToF相关的高估问题.
- 这些发现支持采用引导波技术来改进木材和林产品的刚性评估.
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