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Browsing by Author "Chen, Xin"

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Comparative analysis of cold and warm rolling on tensile properties and microstructure of additive manufactured Inconel 718

Zhang, Tao; Li, Huigui; Gong, Hai; Wu, Yunxin; Ahmad, Abdulrahaman Shuaibu; Chen, Xin; Zhang, Xiaoyong (Springer, 2022-01-14)

Despite the high efficiency and low cost of wire + arc additive manufacture (WAAM), the epitaxial grown columnar dendrites of WAAM deposited Inconel 718 cause inferior properties and severe anisotropy compared to the wrought ...
Effect of rolling force on tensile properties of additively manufactured Inconel 718 at ambient and elevated temperatures

Zhang, Tao; Li, Huigui; Gong, Hai; Wu, Yunxin; Ahmad, Abdulrahaman Shuaibu; Chen, Xin (Elsevier, 2021-07-03)

Inferior mechanical properties and severe anisotropy behavior of wire + arc additive manufactured (WAAM) Inconel 718 due to the large epitaxial grown columnar dendrites restrict the industrial application of WAAM deposition. ...
Effect of shielding conditions on bead profile and melting behaviour in laser powder bed fusion additive manufacturing

Caballero, Armando; Suder, Wojciech; Chen, Xin; Pardal, Goncalo; Williams, Stewart W. (Elsevier, 2020-05-26)

A series of experiments were performed using a 500 W continuous wave fibre laser on a single powder bed layer using different processing variables. The aim was to investigate the effect of different shielding conditions ...
Efficient method for variance-based sensitivity analysis

Chen, Xin; Molina-Cristobal, Arturo; Guenov, Marin D.; Riaz, Atif (Elsevier, 2018-07-05)

Presented is an efficient method for variance-based sensitivity analysis. It provides a general approach to transforming a sensitivity problem into one uncertainty propagation process, so that various existing approximation ...
Efficient reduced-order thermal modelling of scanning laser melting for additive manufacturing

Chen, Guangyu; Ding, Jialuo; Sun, Yongle; Chen, Xin; Wang, Chong; Rodrigues Pardal, Goncalo; Williams, Stewart (Elsevier, 2023-10-02)

Additive manufacturing (AM) with a scanning laser (SL) to independently control melt pool shape has the potential to achieve part building with high geometric accuracy and complexity. An innovative dynamic convection ...
Enablers for uncertainty quantification and management in early stage computational design. An aircraft perspective

Chen, Xin (2017-10)

Presented in this thesis are novel methods for uncertainty quantification and management (UQ&M) in computational engineering design. The research has been motivated by the industrial need for improved UQ&M techniques, ...
Enhancing microstructural and mechanical characteristics of laser welded NiTi SMA/304 SS lap joints with medium and high entropy alloy fillers

Wang, Yipeng; Zhang, Dongni; Li, Hong; Li, Zhuoxin; Yang, Zijia; Chen, Xin; Cong, Baoqiang (Springer, 2024-01-03)

The demand for high-quality nickel-titanium (NiTi) shape memory alloy (SMA) and stainless steel (SS) welded structures has led to significant challenges in fusion welding technology, which is largely influenced by filler ...
Evaluation of a collaborative and distributed aircraft design environment, enabled by microservices and cloud computing

Chen, Xin; Isoldi, Adriano; Riaz, Atif; Mourouzidis, Christos; Keskin, Akin; Smith, Dale; Guenov, Marin D.; Pachidis, Vassilios (AIAA, 2023-01-19)

Presented in this paper are the outcomes from the evaluation of a distributed aircraft design environment, based on microservices and cloud computing. The evaluation was performed on a representative airframe-engine ...
Influence of low-pulsed frequency on arc profile and weld formation characteristics in double-pulsed VPTIG welding of aluminium alloys

Wang, Yipeng; Cong, Baoqiang; Qi, Bojin; Chen, Xin; Yin, Yuhuan; Lin, Sanbao (Elsevier, 2020-09-21)

AA2219 aluminium alloy plates were processed by double pulsed variable polarity tungsten inert gas (DP-VPTIG) welding, and the influence of low-pulsed frequency on arc profile, weld appearance and penetration characteristics ...
Interactive uncertainty allocation and tradeoff for early-stage design of complex systems

Molina-Cristobal, Arturo; Chen, Xin; Guenov, Marin D.; Riaz, Atif; van Heerden, Albert S. J. (AIAA, 2019-11-20)

A common probabilistic approach to perform uncertainty allocation is to assign acceptable variability in the sources of uncertainty, such that prespecified probabilities of meeting performance constraints are satisfied. ...
Laser induced arc dynamics destabilization in laser-arc hybrid welding

Mu, Zhongyan; Chen, Xin; Hu, Renzhi; Lin, Sanbao; Pang, Shengyong (IOP, 2019-12-05)

The interaction between laser and arc plasma is a central issue in laser-arc hybrid welding. We report a new interaction phenomenon called laser destabilizing arc dynamics in kilowatt fiber laser-TIG hybrid welding of 316L ...
Managing assumption-driven design change via margin allocation and trade-offs

El Fassi, Soufiane; Chen, Xin; Riaz, Atif; Guenov, Marin D.; van Heerden, Albert S. J.; Jimeno Altelarrea, Sergio (Taylor and Francis, 2023-10-11)

Assumptions are commonly introduced to fill gaps in knowledge during the engineering design process. However, the uncertainty inherent in these assumptions constitutes a risk that ought to be mitigated. That is, assumptions ...
Margin allocation and trade-off in complex systems design and optimization

Guenov, Marin D.; Chen, Xin; Molina-Cristobal, Arturo; Riaz, Atif; van Heerden, Albert S. J. (AIAA, 2018-05-01)

Presented is an approach for interactive margin management. Existing methods enable a fixed set of allowable margin combinations to be identified, but these have limitations with regard to supporting interactive exploration ...
A set-based approach for coordination of multi-level collaborative design studies

Chen, Xin; Riaz, Atif; Guenov, Marin D.; Molina-Cristobal, Arturo (AIAA, 2020-01-05)

Presented in this paper is a framework for design coordination of hierarchical (multi-level) design studies. The proposed framework utilizes margin management and set-based design principles for handling the challenges ...
A simplified modelling approach for thermal behaviour analysis in hybrid plasma arc-laser additive manufacturing

Wang, Chong; Sun, Yongle; Chen, Guangyu; Chen, Xin; Ding, Jialuo; Suder, Wojciech; Diao, Chenglei; Williams, Stewart (Elsevier, 2022-06-25)

Hybrid plasma transferred arc (PTA)-laser additive manufacturing (AM) has the potential to build large-scale metal components with high deposition rate and near-net shape. However, the process is complex with many parameters ...
Study on location-related thermal cycles and microstructure variation of additively manufactured Inconel 718

Zhang, Tao; Li, Huigui; Gong, Hai; Wu, Yunxin; Chen, Xin; Zhang, Xiaoyong (Elsevier, 2022-04-04)

The complicated thermal history of wire + arc additive manufacturing (WAAM) will affect the microstructure variation and mechanical properties of the as-deposited material. Numerial models of Inconel 718 in WAAM deposition ...
Thermal fluid dynamics of the effect of filler wire on deposition rate and bead formation intending plasma arc-based DED

Chen, Xin; Wang, Chong; Ding, Jialuo; Qu, Rongdong; Wang, Yipeng; Pardal, Goncalo; Williams, Stewart (Elsevier, 2023-10-22)

The influence of filler wire configuration, such as size and geometry, on the deposition rate (DR) and bead formation, has been studied in wire arc-based directed energy deposition (WADED), but the fundamental physics ...
A three-dimensional wire-feeding model for heat and metal transfer, fluid flow, and bead shape in wire plasma arc additive manufacturing

Chen, Xin; Wang, Chong; Ding, Jialuo; Bridgeman, Philippe; Williams, Stewart (Elsevier, 2022-09-19)

A three-dimensional wire-feeding model has been developed to study the transient coupling behaviour of heat and metal transfer, fluid flow, and solidified bead shape in wire plasma arc additive manufacturing (WPAAM). A ...

Browsing by Author "Chen, Xin"

Browsing by Author "Chen, Xin"

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