CAJ | 학술논문

为了快速检测薄板木质材料动态黏弹性这一表征其力学性能的重要指标，以刨花板、中密度纤维板、高密度纤维板和木塑板等4种材质的薄板木质材料为研究对象，利用自行研制的薄板木质材料力学性能检测分析仪，测量出试件在悬臂自由振动时的第一阶固有频率，以及振动过程中的对数减幅系数，进而获得材料的动态黏弹性性能，包括储能模量和损耗模量。并将测量结果与传统的强迫振动动态黏弹性检测方法的测量值进行对比分析。结果表明：两种测量结果之间有显著的线性关系，基于悬臂梁自由振动原理的薄板木质材料动态黏弹性检测方法是可行的。
위료쾌속검측박판목질재료동태점탄성저일표정기역학성능적중요지표，이포화판、중밀도섬유판、고밀도섬유판화목소판등4충재질적박판목질재료위연구대상，이용자행연제적박판목질재료역학성능검측분석의，측량출시건재현비자유진동시적제일계고유빈솔，이급진동과정중적대수감폭계수，진이획득재료적동태점탄성성능，포괄저능모량화손모모량。병장측량결과여전통적강박진동동태점탄성검측방법적측량치진행대비분석。결과표명：량충측량결과지간유현저적선성관계，기우현비량자유진동원리적박판목질재료동태점탄성검측방법시가행적。
For the purpose of detecting the dynamic viscoelasticity of wood composites which is one of several important indicators to characterize mechanical properties, five sets of commercially purchased thin wood composites having four different fiber types were selected as experimental materials. Using a mechanical property analyzer which was newly self-developed , the first order frequency of the specimen cantilever vibrating and logarithmic decrement of the vibration wave-form were measured to calculate the dynamic viscoelasticity including the storage modulus and loss modulus. The dynamic viscoelasticity of the same specimens was also detected by the conventional method based on forced vibration. The results showed that there was a very significant linear correlation between them. It was feasible that the detection method of the dynamic viscoelasticity of the thin wood composites based on the principle of cantilever-beam free vibra-tion.