TY - JOUR

T1 - Correlation of internal and surface temperatures during laser cutting of epoxy-based carbon fibre reinforced plastics

AU - Bluemel, Sven

AU - Staehr, Richard

AU - Jaeschke, Peter

AU - Suttmann, Oliver

AU - Overmeyer, Ludger

N1 - Funding information: This work was supported by the German Research Foundation (DFG) within the project HA 1213/74 1; and the Federal Ministry of Education and Research (BMBF) within the frame of the funding program Photonics Research Germany (FKZ: 13N12763).

PY - 2015/3/24

Y1 - 2015/3/24

N2 - A strong criterion in the evaluation of laser-cut carbon fibre reinforced plastics is the thermal damage of the material. The visible heat affected zone is used as an indicator for the deterioration, which can be measured by destructive methods only. For the purposes of this paper, a non-destructive and contactless heat affected zone estimation method was developed based on experimental data. For this purpose, the internal and surface temperatures were measured simultaneously in order to gain a better understanding of the temperature distribution during laser cutting. Thermocouples and a thermography camera were used for the measurement of the internal and surface temperature, respectively. Based on the data, the internal and surface temperatures were initially correlated. Furthermore, the dependency of the measured surface temperature with the distance between measuring point and heat affected zone was plotted. For the present material and process, this information can be used to estimate the heat affected zone in real-time without the need of destructive testing.

AB - A strong criterion in the evaluation of laser-cut carbon fibre reinforced plastics is the thermal damage of the material. The visible heat affected zone is used as an indicator for the deterioration, which can be measured by destructive methods only. For the purposes of this paper, a non-destructive and contactless heat affected zone estimation method was developed based on experimental data. For this purpose, the internal and surface temperatures were measured simultaneously in order to gain a better understanding of the temperature distribution during laser cutting. Thermocouples and a thermography camera were used for the measurement of the internal and surface temperature, respectively. Based on the data, the internal and surface temperatures were initially correlated. Furthermore, the dependency of the measured surface temperature with the distance between measuring point and heat affected zone was plotted. For the present material and process, this information can be used to estimate the heat affected zone in real-time without the need of destructive testing.

KW - correlation

KW - Epoxy carbon fibre reinforced plastics

KW - heat affected zone

KW - laser cutting

KW - laser processing

KW - temperature measurement

KW - thermocouple

KW - thermography

UR - http://www.scopus.com/inward/record.url?scp=84930584357&partnerID=8YFLogxK

U2 - 10.1177/0731684415576981

DO - 10.1177/0731684415576981

M3 - Article

AN - SCOPUS:84930584357

VL - 34

SP - 662

EP - 671

JO - Journal of Reinforced Plastics and Composites

JF - Journal of Reinforced Plastics and Composites

SN - 0731-6844

IS - 8

ER -