Laser Cutting of Functional Materials by Twin Laser Beam and Thermal Stress Analysis

双激光束激光切割功能材料和热应力分析

基本信息

批准号：
16360050
负责人：
MUTOH Yoshiharu
金额：
$ 9.66万
依托单位：
Nagaoka University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

1.According to the laser cutting experiment, crack growth direction was going to out of the laser scanning line when the direction of the laser changed regardless of the angle.2.Crack growth direction was predicted by FEM analysis with the maximum tangential stress theory. Result of the analysis showed good agreement with that of the experiment.3.It could be possible to control crack growth direction by controlling laser scanning direction according to the result of FEM analysis. However, control of laser scanning direction is complicate and it is difficult to predict a crack growth direction.4.Appling a twin laser beam placed forward and following of the crack tip with in parallel to the laser scanning line is effective to control the crack growth direction according to the result of FEM analysis. Crack growth direction could change by the beam intensity ratio between two beams and the position of the following beam.5.Twin laser beam head was developed by using a prism to sprit a laser beam. This method is simple and easy way to obtain twin laser beam. By adding the control system for the position of a prism in the laser head, it could be possible to cut the complicated shape based on the result of FEM analysis.6.Crack initiation behavior was studied by using the specimen without a starter notch. Crack may earlier initiates when the defocusing distance is small.7.Stress distribution was steep in case of defocusing distance is small according to the results of FEM analysis. Crack unstably propagated with the condition.

1.根据激光切割实验的符号，当激光的方向变化时，无论角度如何，裂纹生长方向都会从激光扫描线中脱离。2。裂缝生长方向通过具有最大切线应力理论的FEM分析预测。分析的结果表明，与实验的结果很好。3。可以通过根据FEM分析的结果控制激光扫描方向来控制裂纹生长方向。然而，对激光扫描方向的控制很复杂，很难预测裂纹的生长方向。裂纹生长方向可能会随两个梁和以下光束的位置之间的光束强度比变化。5.Twin激光束头是通过使用棱镜来喷射激光束的。此方法是获得双激光束的简单简单方法。通过添加棱镜在激光头中的位置的控制系统，可以根据FEM分析的结果剪裁复杂的形状。6。裂缝起始行为是通过使用没有启动器缺口的标本来研究的。当散落距离较小时，裂纹可能会较早地发起。7。根据FEM分析的结果，如果散热距离的距离很小。裂纹不合时宜地随着条件的繁殖。

项目成果

期刊论文数量（26）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of roughness at the edge part of the specimen on laser cutting of a glass

样品边缘部分粗糙度对玻璃激光切割的影响

DOI：
发表时间：
2007
期刊：
Proceedings of JSME Hokuriku-Shinetsu Branch GAKUSEIKAI 36^<th> GAKUSEIIN SOTUSGYO-KENKYU HAPPYOUKAI
影响因子：
0
作者：
K.Hirahara;Y.Miyashita;T.Kondoh;S.Supamard;R.Borrisutthekul;Y.Mutoh
通讯作者：
Y.Mutoh

ガラスのレーザ割断におけるき裂発生挙動に及ぼす試験片端部粗さの影響

玻璃激光切割过程中试样边缘粗糙度对裂纹萌生行为的影响