TY - JOUR
T1 - Emergy-based life-cycle assessment (Em-LCA) for sustainability assessment
T2 - a case study of laser additive manufacturing versus CNC machining
AU - Jiang, Qiuhong
AU - Liu, Zhichao
AU - Li, Tao
AU - Cong, Weilong
AU - Zhang, Hong Chao
N1 - Publisher Copyright:
© 2019, Springer-Verlag London Ltd., part of Springer Nature.
PY - 2019/6/19
Y1 - 2019/6/19
N2 - Sustainability of laser additive manufacturing needs to be evaluated for finding an optimal compromise between technical development and sustainable performance. The emergy-based life-cycle assessment (Em-LCA) methodology is applied to investigate the sustainability of laser engineered net shaping (LENS) by comparing that of the computer numerical control (CNC) machining for gear manufacturing. Based on the emergy accounting methodology, the emergy-based sustainability index (ESI) is constructed to indicate the sustainability of the two technologies. In addition, contributions of different processes in the two manufacturing options to the final sustainability have been identified for future improvement. The results indicate that Em-LCA offers a practical sustainability assessment tool. The sustainability of the LENS process is much higher than that of the CNC machining. In the end, several countermeasures are proposed to improve the sustainability of the manufacturing technologies.
AB - Sustainability of laser additive manufacturing needs to be evaluated for finding an optimal compromise between technical development and sustainable performance. The emergy-based life-cycle assessment (Em-LCA) methodology is applied to investigate the sustainability of laser engineered net shaping (LENS) by comparing that of the computer numerical control (CNC) machining for gear manufacturing. Based on the emergy accounting methodology, the emergy-based sustainability index (ESI) is constructed to indicate the sustainability of the two technologies. In addition, contributions of different processes in the two manufacturing options to the final sustainability have been identified for future improvement. The results indicate that Em-LCA offers a practical sustainability assessment tool. The sustainability of the LENS process is much higher than that of the CNC machining. In the end, several countermeasures are proposed to improve the sustainability of the manufacturing technologies.
KW - CNC machining
KW - Emergy-based life-cycle assessment
KW - Laser additive manufacturing
KW - Sustainability assessment
UR - http://www.scopus.com/inward/record.url?scp=85062722435&partnerID=8YFLogxK
U2 - 10.1007/s00170-019-03486-8
DO - 10.1007/s00170-019-03486-8
M3 - Article
AN - SCOPUS:85062722435
SN - 0268-3768
VL - 102
SP - 4109
EP - 4120
JO - International Journal of Advanced Manufacturing Technology
JF - International Journal of Advanced Manufacturing Technology
IS - 9-12
ER -