Laser Additive Manufacturing

Gasser, Andrés; Backes, Gerhard; Kelbassa, Ingomar; Weisheit, Andreas; Wissenbach, Konrad

doi:10.1002/latj.201090029

Cited by 146 publications

(36 citation statements)

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“…Compared with the powder bed fusion AM such as selective laser sintering/melting (SLS/M), laser engineered net shaping (LENS), as a laser beam deposition AM method, has the advantages of parts remanufacturing capability, high powder utilizing efficiency, high part building efficiency, etc. [6,7].…”

Section: Introductionmentioning

confidence: 98%

A fundamental investigation on ultrasonic vibration-assisted laser engineered net shaping of stainless steel

Cong

Ning

2017

International Journal of Machine Tools and Manufacture

127

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Section: Introductionmentioning

confidence: 98%

A fundamental investigation on ultrasonic vibration-assisted laser engineered net shaping of stainless steel

Cong

Ning

2017

International Journal of Machine Tools and Manufacture

127

View full text Add to dashboard Cite

“…Laser Additive Manufacturing (LAM) is a cutting-edge manufacturing approach that is based on consecutive application of material layers and the transfer of geometrical information from the digital design data to the resulting near-net shape [1]. Laser Metal Deposition (LMD) and Selective Laser Melting (SLM) are the two well-established LAM techniques that utilize serial powder materials including superalloys, ceramics, and multi-material compounds e.g.…”

Section: Discussionmentioning

confidence: 99%

Femtosecond Laser Post-Processing of Metal Parts Produced by Laser Additive Manufacturing

Mingareev

Bonhoff

El-Sherif

et al. 2013

MATEC Web of Conferences

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High-repetition rate femtosecond laser radiation was utilized to improve surface quality of metal parts manufactured by laser additive techniques. This novel approach can be used to postprocess parts made of heat-sensitive materials, and to attain the designed net shape with micrometer precision. SummaryLaser Additive Manufacturing (LAM) is a cutting-edge manufacturing approach that is based on consecutive application of material layers and the transfer of geometrical information from the digital design data to the resulting near-net shape [1]. Laser Metal Deposition (LMD) and Selective Laser Melting (SLM) are the two well-established LAM techniques that utilize serial powder materials including superalloys, ceramics, and multi-material compounds e.g. wear and thermal protective coatings [2]. Given the near-net shape nature of LAM, a certain amount of mechanical post-processing, i.e. CNC milling, is required to improve the surface finish and the consistency with the design data.Femtosecond laser machining is an established micro-processing technique that makes advantage of the ultrafast deposition of the optical energy into the material. By using laser pulses with sub-picosecond duration, the heataffected zone at the workpiece can be significantly reduced compared to longer pulses, and various heat-sensitive materials can be processed with sub-micron precision [3].In this paper we present our study of femtosecond laser post-processing of different components manufactured by SLM and LMD from Ni-base superalloys. Various 3D-shaped metal parts made of IN718 and IN625 superalloys were irradiated with tightly focused femtosecond laser light (Amplitude Satsuma, t p <400 fs, λ=1030 nm, f rep = 0.5-5 MHz). Different scanning approaches were used to increase the ablation efficiency at flat and curved surfaces of the workpiece. Laser pulse energy was varied to optimize the resulting surface finish and geometrical consistency. Surface roughness was determined before and after the processing.

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“…In order to reduce costs and lead times, aircraft maintenance companies use laser metal deposition techniques to repair engine housing, compressor parts, and turbine blades [32]. Franuhofer ILT used LMD and SLM to repair of the Inconel 718 turbine case and compressor seal and were eventually certified by Rolls-Royce Deutschland [89,90]. Rolls-Royce reported that 30% of the production time can be saved by using AM [91].…”

Section: Rapid Tooling and Repairingmentioning

confidence: 99%

Additive Manufacturing for the Aircraft Industry: A Review

Singamneni¹,

Lv²,

Hewitt³

et al. 2019

Research Article1J Aeronaut Aerospace Eng

122

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Considering the stringent regulations, manufacturing of aircraft parts is often quite complex and time consuming. The multi-million components, multi-tier manufacturing systems and the severe constraints surrounding the sector lead to heavy inventory investments to achieve the just-in-time supply of parts often needed to reduce the airplane ground times. Additive manufacturing evolved allowing for the direct production of complex parts based on digital data with no complex tooling or machinery, a messiah of true just in time production. Appropriate integration of additive manufacturing with the aircraft industry could resolve some of the supply chain and inventory hurdles. Significant progress is already evident in these lines, but the lack of quality assurance attributes and certification standards is hampering the progress. The state-of-the-art of the application of additive manufacturing in the aircraft industry is reviewed in this paper. The supply chain configurations of the aircraft industry, the possible roles of additive manufacturing in relaxing the pressures in the system are evaluated. The application areas, enhanced attributes, and certification standards are critically reviewed and classified. The overall growth in the application of additive manufacturing in the aircraft industry, the main hurdles, and the future possibilities are evaluated and presented systematically, clearly portraying the developments.

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Laser Additive Manufacturing

Cited by 146 publications

References 0 publications

A fundamental investigation on ultrasonic vibration-assisted laser engineered net shaping of stainless steel

A fundamental investigation on ultrasonic vibration-assisted laser engineered net shaping of stainless steel

Femtosecond Laser Post-Processing of Metal Parts Produced by Laser Additive Manufacturing

Additive Manufacturing for the Aircraft Industry: A Review

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