Multi-objective optimization of process parameters in an area-forming rapid prototyping system using the Taguchi method and a grey relational analysis

Chiu, Shih‐Hsuan; Gan, S. M.; Tseng, Yen-Chun; Chen, Kun-Ting; Chen, Cheng-Chin; Su, Chun-Hao; Pong, Sheng-Hong

doi:10.1177/0954405415623479

Cited by 17 publications

(12 citation statements)

References 34 publications

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“…Research has driven huge advances in additive manufacturing (AM) in recent decades. AM currently allows the manufacture of products in various materials (polymers, metals, ceramics, and composites) and geometries that would be unfeasible or even impossible to manufacture by other processes [1][2][3] . Throughout the development of AM, vat photopolymerization processes have been highlighted.…”

Section: Introductionmentioning

confidence: 99%

Vat Photopolymerization Additive Manufacturing Resins: Analysis and Case Study

et al. 2020

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Additive manufacturing processes have been developed over the last decades, especially vat photopolymerization (VP) processes, due to its simplicity and speed. The objective of this paper is to characterize commercial VP resins widely used for technical applications. Thus, test specimens were printed by Digital Light Processing and subjected to tensile, compression, flexural, hardness, and inorganic composition analyses. The resin with the highest resistance and hardness (containing 0.6 vol% of inorganics load) reached 53 MPa in tension, 110 MPa in compression, 79 MPa in bending, and 82.3 Shore D, which is comparable to injected polymers. A case study was made, replacing the injected gears of a reducer by printed ones and comparing the finite element analysis with resin properties. The characterization and case study results encourage the expansion of VP processes in the manufacturing of products in several industries and service sectors, as well as the development of new composite resins.

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Section: Introductionmentioning

confidence: 99%

Vat Photopolymerization Additive Manufacturing Resins: Analysis and Case Study

et al. 2020

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“…In the last four decades, scientific and industrial researches have enabled considerable advances in additive manufacturing, allowing the manufacture of several products to be made of polymers, metals, ceramics, and composites with unviable or even impossible geometries by other processes [1][2][3][4]. The development of new AM techniques, materials and software have provided continuous advances in several areas [2,5,6].…”

Section: Introductionmentioning

confidence: 99%

An Overview of Laser Engineered Net Shaping of Ceramics

et al. 2020

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Additive manufacturing (AM) has provided huge versatility in geometry and materials, allowing new products and processes in several areas to be created. Laser Engineered Net Shaping (LENS) is an additive manufacturing process created in 1995 that allows building high-density metals and ceramics parts with no need for further operation. This manuscript aims to study the scientific literature about the process of Laser Engineered Net Shaping related to ceramics. After a systematic review, the articles were grouped into three categories: ceramic coating and AM of ceramics and AM of composites with ceramic reinforcement. Raw materials, substrates, applications, process parameters, and the obtained properties were analyzed and summarized for each group. Most of the additive manufacturing of ceramic parts are related to alumina, which present similar properties when compared to the traditionally manufactured ones. Recent works have the aid of an ultrasonic vibration to homogenize the in-process material, reduce cracks and improve mechanical properties. The additive manufacturing of composites with ceramic reinforcement has been used to create functionally graded composites materials with increased hardness, while the ceramic coating has been employed to manufacture biocompatible coating with increased hardness and low wear rate. Moreover, an additive manufacturing timeline including Laser Engineered Net Shaping landmarks is presented.

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“…The design of modern mechanical components often requires the use of low-density and high-strength materials, as well as fast, economic and flexible manufacturing. 1–3…”

Section: Introductionmentioning

confidence: 99%

Mechanical structural design based on additive manufacturing and internal reinforcement

Lovo

Camargo

Araujo

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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The design of modern mechanical components often requires the use of low-density and high-strength parts. Additive manufacturing presents competence in obtaining format complexity internally (voids, ducts, channels) and externally (shape, holes). However, parts obtained by material extrusion additive manufacturing are highly anisotropic and relatively weak. This paper aims to present a new mechanical design technique that combines the high geometry flexibility of additive manufacturing with internal structuring reinforcement by high-strength materials, which enables optimized parts with reinforcement in the most mechanical stressed areas during service, through adopting structured internal geometry filled with reinforcement material. Dense test specimens and test specimens with internal structural canals filled with reinforcement material (epoxy resin and carbon fibers) were designed, fabricated and tested physically and virtually. The obtained results provide property values for 3D-printed acrylonitrile butadiene styrene (typical material of additive manufacturing) and for this polymer reinforced with various reinforcement material configurations (useful for mechanical design). The reinforcement decreased anisotropy and improved mechanical properties. Optimized parts filled with resin and long carbon fibers had maximum flexural resistance of 112 MPa, with a specific weight of 1.1 g/cm3. This reinforcement provided parts with specific flexural strength similar to structural aluminum alloys, preserving the geometry and external dimension of the printed parts. The technique presented here shows the possibility of new conceptions in mechanical components design and strength optimization by internal reinforcement canals in parts. The technique is useful for mechanical design activity and allows for new product conceptions based on additive manufacturing.

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Multi-objective optimization of process parameters in an area-forming rapid prototyping system using the Taguchi method and a grey relational analysis

Cited by 17 publications

References 34 publications

Vat Photopolymerization Additive Manufacturing Resins: Analysis and Case Study

Vat Photopolymerization Additive Manufacturing Resins: Analysis and Case Study

An Overview of Laser Engineered Net Shaping of Ceramics

Mechanical structural design based on additive manufacturing and internal reinforcement

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