不同頻率超音波技術評估商用粒片板性質之探討

Evaluation of Commercial Particle Board Properties by Ultrasonicwave Technique Using Various Frequency

楊德新(Te-Hsin Yang) ； 陳湘琴(Hsiang-Chin Chen) ； 賴志恆(Chi-Hen Lai) ； 王松永(Song-Yung Wang)

《林產工業》 23卷1期 (2004/03) Pp. 33-42

https://doi.org/10.6561/FPI.2004.23(1).4

摘要

本研究利用16-220 KHz頻率之超音波針對市前上所販售之粒片板進行靜曲強度、內聚堅強度以及木螺絲釘保持力之評估，結果指出，強度性質方面V313型粒片板可通過CNS 2215 18型粒片板標準，V20與F型粒片板則僅達13型標準。不同頻率超音波評估方面，各頻率趙音波表現於粒片板表面上無顯著差異（V_II/ V_I= 1.02-1.09），即粒片板在強度上並無顯著異方位存在。而評估粒片板之靜曲性質時，以低頻率超音波者為佳，其中以54 KHz者可得較高之準確性，而評估粒片板厚度方向之性質時，則以高頻率超音波（220 KHz）為佳。

關鍵字

超音波 ； 靜曲強度 ； 內聚強度 ； 木螺絲釘保持力

並列摘要

The purpose of this research was to evaluate the properties of particleboard by different frequencies of ultrasonic wave following the CNS 2215 standard. Results were summarized as follows: The properties of type V 313 were met the standard as specified in CNS 2215 type 18 of particleboard, however, the properties of type V 20 and type F were just met the CNS 2215 type 13 of particleboard. After non-destructive testing, it was found that different frequencies have no significant influence on the wave velocity measured in either the longitudinal or the transversal direction. (V_II/V_I = 1.02-1.09). This indicated that the anisotropic characteristics of particleboard were not significant. In order to obtain accurate data, the 54 KHz of ultrasonic wave was good for evaluating bending strength of particleboards while that the 220 KHz frequency predicted internal bonding strength and screw holding strength accurately than others did

並列關鍵字

Ultrasonic wave ； Bending strength ； Internal bonding strength ； Screw holding strength