Imperial College London
Portrait Picture

ProfessorLeroyGardner

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Structural Engineering
 
 
 
//

Contact

 

+44 (0)20 7594 6058leroy.gardner

 
 
//

Location

 

435Skempton BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Shah:2023:10.1016/j.jclepro.2023.136071,
author = {Shah, IH and Hadjipantelis, N and Walter, L and Myers, RJ and Gardner, L},
doi = {10.1016/j.jclepro.2023.136071},
journal = {Journal of Cleaner Production},
pages = {1--14},
title = {Environmental life cycle assessment of wire arc additively manufactured steel structural components},
url = {http://dx.doi.org/10.1016/j.jclepro.2023.136071},
volume = {389},
year = {2023}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Wire arc additive manufacturing (WAAM) enables the production of structural components with topologically optimised geometries thus leading to significant self-weight reductions for a given load-carrying capacity. A common question arises regarding the environmental performance of WAAM structural components in comparison with conventional steel structural components. Thus, a comparative cradle-to-gate life cycle assessment has been conducted where the environmental impact of producing a topologically optimised WAAM steel beam is compared with that of producing a conventional hot-rolled steel I-beam. The beams are 2 m long, simply-supported and loaded vertically at midspan. The impact of using either carbon steel or stainless steel is investigated. The results demonstrate that the carbon steel and stainless steel WAAM beams have 7% and 24%, respectively, lower climate change impact than the corresponding I-beams. It is concluded that WAAM can lead to lower CO2-eq. emissions than conventional hot-rolling, provided that mass reductions of the order of 50% (which are readily attainable) can be achieved by employing WAAM in conjunction with, for instance, topology optimisation. Furthermore, it is shown that the shielding gas contributes greatly to the environmental impact of WAAM, and that, by using higher deposition rates or by utilising renewable energy sources, the impact of WAAM can be reduced by more than 30%.
AU  - Shah,IH
AU  - Hadjipantelis,N
AU  - Walter,L
AU  - Myers,RJ
AU  - Gardner,L
DO  - 10.1016/j.jclepro.2023.136071
EP  - 14
PY  - 2023///
SN  - 0959-6526
SP  - 1
TI  - Environmental life cycle assessment of wire arc additively manufactured steel structural components
T2  - Journal of Cleaner Production
UR  - http://dx.doi.org/10.1016/j.jclepro.2023.136071
UR  - https://www.sciencedirect.com/science/article/pii/S0959652623002299?via%3Dihub
UR  - http://hdl.handle.net/10044/1/101924
VL  - 389
ER  -
Download