Magneting Tagging of Wood Preservatives

9361884 Anthony经处理的木材产品的使用性能始终取决于 引入特定数量（保留） 防腐剂 化学品要求 深处 （保留） 防腐剂化学品的要求深度（渗透）内 木材. 质量控制程序，以确保 充分的渗透和保持目前依赖于从所有处理过的构件的子集中移除增量芯以用于随后的实验室分析。 这项研究将审查 的 可行性 的 磁 标记 木材防腐剂，使简单的非破坏性评估的渗透和保留的防腐化学品在处理过的木材。 在磁标记中，少量极细的“传感器”颗粒均匀地分布在整个区域中。 治疗前的防腐剂 当随后询问涡流无损评价，标记的木材响应的特征签名比可以与防腐剂的分布。 涉及磁性标记材料的涡流检测的一个特征是，电磁能量可以穿透导电标记材料的相当大的厚度。 这允许标记材料的体积表征。 第一阶段研究的技术目标是（1）评估将铁磁颗粒引入防腐剂化学品并实现磁性标记防腐剂渗透到木材中的可行性，以及（2）评估用涡流测量磁性标记防腐剂的渗透和保留的可行性。 ***

9361884 Anthony In-service performance of treated wood products depends on consistently inducting specified quantities (retention) of preservative chemicals to require depths (retention) of preservative chemicals to required depths (penetration) within the wood. Quality control procedures to ensure adequate penetration and retention currently rely on the removal of increment cores from a subset of all treated members for subsequent laboratory analysis. The proposed research will examine the feasibility of magnetically tagging wood preservatives to enable simple nondestructive evaluation of penetration and retention of preservative chemicals in treated wood. In magnetic tagging, a small amount of extremely fine "sensor" particles is uniformly distributed throughout the preservative prior to treatment. When subsequently interrogated by eddy current nondestructive evaluation, the tagged wood responds with a characteristics signature than can be related to preservative distribution. a feature of eddy current testing involving magnetically tagged materials is that electromagnetic energy can penetrate significant thicknesses of conducting tagged materials. This permits the volumetric characterization of tagged materials. The technical objectives of the Phase I research are (1) to evaluate the feasibility of introducing ferromagnetic particles into preservative chemicals and achieving penetration of the magnetically tagged preservative into wood, and (2) to evaluate the feasibility of measuring penetration and retention of magnetically tagged preservative with eddy current. ***