Laser Direct Metal Deposition (LDMD) – an Overview

Vaibhav Verma; Adhirath Mandal; Ashish Shukla

doi:https://doi.org/10.51976/ijari.541713

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Laser Direct Metal Deposition (LDMD) – an Overview

Vaibhav Verma, Adhirath Mandal, Ashish Shukla

Vol 5 , Issue 4 , October - December 2017 | Pages: 81-95 | Research Paper

https://doi.org/10.51976/ijari.541713

Received: January 25, 2017 | Revised: June 20, 2017 | Accepted: July 28, 2017 | Published Online: December 15, 2017

Author Details ( * ) denotes Corresponding author

1. * Vaibhav Verma, TATA Consultancy Services, Bangalore, Karnataka, India (vaibhav.emc2@gmail.com)

2. Adhirath Mandal, Department of Mechanical Engineering, Greater Noida, Uttar Pradesh, India

3. Ashish Shukla, Department of Mechanical Engineering, Delhi Technological University, Delhi, India

Laser Direct Metal deposition (LDMD) is an additive manufacturing process, it is used to manufacture complex 3D objects directly from CAD files. Laser creates melt region on surface of substrate and powder material blown on to the laser-induced melt pool to form a layer. After a layer deposition, nozzle and laser assembly raised vertically upward by calculated small increment. Next layer is built on previous one, thus a 3D part is built layer by layer. Different FEA Tools were used like COMSOL, ANSYS, ABAQUS etc, and finite element models are developed to numerically simulate heat transfer and coupled thermal phenomena to analyze the influence of various parameters on thermal history. Thermal cycles experienced at different locations and thermal gradient at mutually perpendicular directions are studied. Influence of thermal loading on the model’s distortion is analyzed. LDMD process finds potential application in rapid tooling, prototyping, precision repair work, and manufacture of complex, intricate components with varying compositions, work on challenging materials like Titanium alloys, superalloys etc. Applications are repair of moulds, dyes, motor, gear component etc, work on challenging material(Titanium alloys, superalloys), fabrication of dissimilar metals and so on.

Keywords

LDMD; COMSOL; ANSYS; ABAQUS; Superalloys; Titanium; Manufacturing; Additive Manufacturing; Rapid Prototyping.

http://www.industrial-lasers.com/articles/print/volume-250/issue-6/features/laser-metal-deposition.html

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