Component Repair Using Laser Direct Metal Deposition

Wang, W.; Pinkerton, Andrew J.; Wee, Lee Mein; Li, L.

doi:10.1007/978-1-84628-988-0_78

Cited by 17 publications

(12 citation statements)

References 4 publications

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“…Wang and colleagues () and Pinkerton and colleagues () investigated the use of laser direct metal deposition as repairing technique for deep or internal cracks and defects in metallic components (after milling a slot down to the affected area). Despite the high‐quality repairs that can be obtained, according to Wang and colleagues (), porosity at the boundaries between the original part and the added material could be a problem.…”

Section: Potential Life Cycle Benefits Of Additive Manufacturing Manumentioning

confidence: 99%

Environmental Dimensions of Additive Manufacturing: Mapping Application Domains and Their Environmental Implications

Kellens

Baumers

Gutowski

et al. 2017

J of Industrial Ecology

215

128

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SummaryAdditive manufacturing (AM) proposes a novel paradigm for engineering design and manufacturing, which has profound economic, environmental, and security implications. The design freedom offered by this category of manufacturing processes and its ability to locally print almost each designable object will have important repercussions across society. While AM applications are progressing from rapid prototyping to the production of end-use products, the environmental dimensions and related impacts of these evolving manufacturing processes have yet to be extensively examined. Only limited quantitative data are available on how AM manufactured products compare to conventionally manufactured ones in terms of energy and material consumption, transportation costs, pollution and waste, health and safety issues, as well as other environmental impacts over their full lifetime. Reported research indicates that the specific energy of current AM systems is 1 to 2 orders of magnitude higher compared to that of conventional manufacturing processes. However, only part of the AM process taxonomy is yet documented in terms of its environmental performance, and most life cycle inventory (LCI) efforts mainly focus on energy consumption. From an environmental perspective, AM manufactured parts can be beneficial for very small batches, or in cases where AM-based redesigns offer substantial functional advantages during the product use phase (e.g., lightweight part designs and part remanufacturing). Important pending research questions include the LCI of AM feedstock production, supply-chain consequences, and health and safety issues relating to AM.

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Section: Potential Life Cycle Benefits Of Additive Manufacturing Manumentioning

confidence: 99%

Environmental Dimensions of Additive Manufacturing: Mapping Application Domains and Their Environmental Implications

Kellens

Baumers

Gutowski

et al. 2017

J of Industrial Ecology

215

128

View full text Add to dashboard Cite

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“…przez naniesienie dodatkowej warstwy w miejscu ubytku [7]. Takie skróty, jak LMD, LENS, DMD i LDMD odnoszą się -w mniejszym lub większym stopniu -do metody LC [1] [9].…”

Section: Szczegółowy Opis Technologiiunclassified

A review of the newest 3D printing technology for metal objects

et al. 2017

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Artykuł zawiera przegląd najnowszych technologii druku 3D obiektów z metalu. Technologie te sklasyfikowano ze wzglę-du na sposób podawania oraz łączenia materiału. Wskazano wady i zalety poszczególnych rozwiązań podawania materiału metalowego. Przedstawiono skrótowy opis technologii druku 3D z użyciem materiału metalowego oraz zestawiono producentów oferujących urządzenia do danej technologii. SŁOWA KLUCZOWE: druk 3D, obiekty metalowe, technika przyrostowaThe article presents the newest technologies of the 3D printing of metal objects. The technologies were classified on account of the way of laying and joining material. The research results are indicated the advantages and the disadvantages of the various methods of joining metal material. There is presented a brief description of the technology of the 3D printing which using a metal material, and lists of manufacturers who offering the device in the technology. KEYWORDS: 3D printing, metal objects, additive techniqueDruk trójwymiarowy (3D), należący do przyrostowych technik wytwarzania, jest wykorzystywany już od ponad 30 lat. Pionierem w tej dziedzinie jest Charles Hull, który w 1984 r. opracował technologię zwaną stereolitografią. Polega ona na utwardzaniu fotopolimerów za pomocą wiązki promieni ultrafioletowych. W kolejnych latach nastą-pił wzrost zainteresowania tematyką druku przestrzennego. Przełomowe było ostatnie dziesięciolecie, kiedy druk 3D został "uwolniony" od obowiązywania pierwszych praw patentowych, które właśnie wygasały. Dodatkowo projekt RepRap (replicating rapid prototyper) spopularyzował technikę druku przestrzennego za sprawą możliwości jego wykorzystywania -na zasadach wolnego dostępu do schematów urządzenia czy oprogramowania. Obecnie techniki przyrostowe znajdują się w obszarze zainteresowania wielu branż przemysłu. Potrzeby są jednak skierowane na zastosowanie technik 3D do tworzenia obiektów metalowych. Podział technologiiTechnika przyrostowego wykonywania metalowych obiektów uwzględnia: formę materiału roboczego oraz sposób jego łączenia i podawania. Dobór poszczególnych rozwiązań określa rodzaj technologii, w jakiej urządzenie będzie pracowało. Obecnie wyróżnia się wiele technologii druku 3D obiektów metalowych, a każda ma wyjąt-kowe cechy. Wybór najlepszej technologii zależy przede wszystkim od potrzeb wykonawcy i zamawiającego obiekty 3D z metalu. Te wymagania to najczęściej: krótki czas i niski koszt wytworzenia, odpowiednie właściwości mechaniczne materiału, wysoka dokładność (wierne odwzorowanie) czy druk skomplikowanych geometrycznie modeli. Na rys. 1 przedstawiono autorski podział technologii druku 3D obiektów metalowych.

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“…The energy density is concentrated, the dilution ratio and heat affected zone are small. The thickness and width of cladding layer are controllable, which is easy to realize automation [2][3][4]. The bonding between cladding layer and substrate is metallurgical bonding, so the bonding strength is high.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the residual stress in additive manufacturing of Ti-6Al-4V

Liu

Jiang

Lei

et al. 2022

J. Phys.: Conf. Ser.

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Minimizing the residual stress build-up in metal-based additive manufacturing plays a pivotal role in selecting a particular material and technique for making an industrial part. However, there are still some limitations for this application, especially the unfavourable final shape and undesired macroscopic properties of metallic parts built in additive manufacturing systems. The distortion or crack due to the residual stress of these parts leads usually to severe problems for some kinds of metal additive manufacturing technology. Therefore, it is necessary to study the distribution of residual stress in the process, which can provide an important reference for the process control of laser cladding. Taking Ti-6Al-4V (TC4) alloy as the research object, a nonlinear sequential thermal mechanical coupling model is established by combining the finite element numerical simulation and experimental deformation measurement. A least squared cost function between the Finite Element Cladding model and the experimental deformation measurement is proposed, and the finite element model updating method is constructed to retrieve the heat source parameters of TC4 Alloy in laser cladding. By comparing the numerical results with the experiment, the rationality of the inversion results of heat source parameters is verified. After that, the stress near the cladding layer is analyzed, and the influence of temperature field on the mechanical field distribution is further studied through the affects of stress distribution.

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Component Repair Using Laser Direct Metal Deposition

Cited by 17 publications

References 4 publications

Environmental Dimensions of Additive Manufacturing: Mapping Application Domains and Their Environmental Implications

Environmental Dimensions of Additive Manufacturing: Mapping Application Domains and Their Environmental Implications

A review of the newest 3D printing technology for metal objects

Analysis of the residual stress in additive manufacturing of Ti-6Al-4V

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