CAJ | 학술논문

以成熟毛竹为研究对象，在显微镜下从竹纤维鞘中成功切割出竹纤维束拉伸试样，并应用微拉伸技术测量其纵向拉伸强度和模量。通过对机械剥离的单根维管束以及竹片小试样进行拉伸对比，获得竹纤维鞘拉伸弹性模量和强度的间接测量值和计算值。结果显示，竹纤维束的拉伸弹性模量和强度平均值分别为42．72 GPa和729?25 MPa，介于竹纤维鞘的间接测量值和计算值之间，并与已有的研究结果也吻合得较好，表明竹纤维束试样的测试结果可以代表竹纤维鞘的整体力学性能。同时，笔者提出了在细观尺度下研究竹子力学特性的关键实验技术。
이성숙모죽위연구대상，재현미경하종죽섬유초중성공절할출죽섬유속랍신시양，병응용미랍신기술측량기종향랍신강도화모량。통과대궤계박리적단근유관속이급죽편소시양진행랍신대비，획득죽섬유초랍신탄성모량화강도적간접측량치화계산치。결과현시，죽섬유속적랍신탄성모량화강도평균치분별위42．72 GPa화729?25 MPa，개우죽섬유초적간접측량치화계산치지간，병여이유적연구결과야문합득교호，표명죽섬유속시양적측시결과가이대표죽섬유초적정체역학성능。동시，필자제출료재세관척도하연구죽자역학특성적관건실험기술。
In this paper, tensile samples of bamboo fiber bundle are successfully dissected from the fiber sheaths of moso bamboo under the aid of a light microscope. The tensile modulus and strength were measured with a microtensile tester consequently. For comparison, samples of single vascular bundles ( containing both fiber sheaths and some conductive tissues) and bamboo slivers with different fiber contents were also fabricated and tested. The tensile modulus and strength of the fiber bundles were 42?72 GPa and 729.25 MPa, respectively, located between the values obtained by the latter two methods. The result also agreed well with several published reports, which indicated the prepared bamboo fiber bundles could well represent the real performances of bamboo fiber sheaths. The present paper not only proposed a well-established key methodology for studying the mechanical behaviors of bamboo at microscopic scale, but also provided basic data for the development of bamboo fiber bundles reinforced polymer composites and the multiscale simulation of bamboo mechanical behavior.