additive manufacturing research papers
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additive manufacturing research papers




Computer-aided design for additive manufacturing of cellular structures
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ABSTRACT Additive Manufacturing (AM) technologies, informally called rapid prototyping, enable the fabrication of parts and devices that are geometrically complex, have graded material compositions, and can be customized. In this paper, we focus on cellular 

Design for additive manufacturing of cellular structures
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ABSTRACT Additive Manufacturing technologies enable the fabrication of parts and devices that are geometrically complex, have graded material compositions, and can be customized. To take advantage of these capabilities, it is important to assist designers in exploring 

 Additive Manufacturing-Methods were examined to link microstructure and linear weld density to the mechanical properties of ultrasonic additive manufacturing
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Ultrasonic additive manufacturing (UAM) is a solid-state joining process in which thin metallic tapes are ultrasonically welded on top of one another and periodically machined to create a final part. A schematic illustration of the process is shown in Fig. 1. Along with 

Towards the Design of a layer-based additive manufacturing process for the realization of metal parts of designed mesostructure
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As such, the authors look towards the use of layer-based additive manufacturing (AM) as a means of providing the design freedom that is currently absent from cellular material manufacturing processes. Since current metalbased AM techniques do not offer an 

Laser engineered net shaping advances additive manufacturing and repair
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shows the typical process layout. The deposition substrate or target is aligned to the desired start point of the deposit. The powder feeder (s) feed the powder delivery nozzle assembly, which creates a powder stream that converges at the point of the deposit. Next, 

Process Scaling and Transient Melt Pool Size Control in Laser-Based Additive Manufacturing Processes
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ABSTRACT This modeling research considers two issues related to the control of melt pool size in laser-based additive manufacturing processes. First, the problem of process size scale is considered, with the goal of applying knowledge developed at one processing size scale ( 

Scaling effects in laser-based additive manufacturing processes
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ABSTRACT Thermal modeling is used to address the control of melt pool size in laser-based additive powder fusion processes under steady state conditions. These processes use localized melting of metal powder to add features to metallic components during 

Transient Changes in Melt Pool Size in Laser Additive Manufacturing Processes
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ABSTRACT This research addresses the prediction of transient changes melt pool size in laser- based additive powder fusion processes. Additive processes are designed to deposit features onto an existing part, as a means for more efficient part manufacture or part repair 

A comparative study of metallic additive manufacturing power consumption
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ABSTRACT Efficient resource utilisation is seen as one of the advantages of Additive Manufacturing (AM). This paper presents a comparative assessment of electricity consumption of two major metallic AM processes, selective laser melting and electron 

A brief history of additive manufacturing and the 2009 roadmap for additive manufacturing: looking back and looking ahead
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ABSTRACT Additive Manufacturing (AM) has roots in topography and photosculpture which date back almost 150 years. Both of these early technologies might be categorized as manual cut and stack approaches to building a freeformed object in a layerwise fashion. 

STL 2.0: A Proposal for a Universal Multi-Material Additive Manufacturing File Format
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The de-facto standard STL file format has served the rapid prototyping community for over two decades, but falls short with the advent of new technological developments such as the ability to handle multiple and graded materials, specify volumetric digital inkjet patterns 

Additive Manufacturing (AM) and Nanotechnology: Promises and Challenges
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ABSTRACT The narrow choice of materials used in Additive Manufacturing (AM) remains a key limitation to more advanced systems. Nanomaterials offer the potential to advance AM materials through modification of their fundamental material properties. In this paper, the 

Thermal Modeling of Electron Beam Additive Manufacturing Process–Powder Sintering Effects
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ABSTRACT In recently developed Additive Manufacturing (AM) technologies, high-energy sources have been used to fabricate metallic parts, in a layer by layer fashion, by sintering and/or melting metal powders. In particular, Electron Beam Additive Manufacturing (EBAM 

Worldwide Trends in Additive Manufacturing
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ABSTRACT Additive manufacturing (AM) technology is causing monumental change in product development. Its use for modeling and prototyping applications is well developed and understood and it is now impacting the actual manufacture of products. Organizations of 

Spiral growth manufacturing (SGM)–a continuous additive manufacturing technology for processing metal powder by selective laser melting
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ABSTRACT Spiral growth manufacturing is a new innovative powder based rapid manufacturing technique. The innovation exists in the methodology in which powder layers are deposited. Unlike other pre-placed powder systems, the deposited layers move relative to the 

Additive Manufacturing–A supply chain wide response to economic uncertainty and environmental sustainability
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ABSTRACT In this paper the author will review some of the current commercial applications of Additive Layer Manufacturing (ALM) and the business benefits associated with technology adoption. The paper will review applications such as Rapid Tooling, where ALM 

Stability of microstructure in al3003 builds made by very high power ultrasonic additive manufacturing
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ABSTRACT Very High Power Ultrasonic Additive Manufacturing (VHP-UAM) system was used to produce aluminum parts from 150 µm thick Al3003-H18 foils. The build was processed at 36 µm vibration amplitude, 8 kN normal load, and 35.6 mm/s weld speed at 20 kHz 

Energy inputs to additive manufacturing: does capacity utilization matter?
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ABSTRACT The available additive manufacturing (AM) platforms differ in terms of their operating principle, but also with respect to energy input usage. This study presents an overview of electricity consumption across several major AM technology variants, 

Design and additive manufacturing of cellular lattice structures
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ABSTRACT The concept of designed cellular lattice materials is motivated by the desire to put material only where it is needed for a specific application. From a mechanical engineering viewpoint, a key advantage offered by cellular materials is high strength 

Additive Manufacturing State of the Industry
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This paper provides a concise analysis of the additive manufacturing (AM) industry worldwide. The ASTM International Committee F42 on Additive Manufacturing Technologies defines AM as the process of joining materials to make objects from 3D model data, 

Additive manufacturing in metal: new option for medical applications
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Beyond creation of customized facsimile models of a patient's anatomy, many companies are now using additive manufacturing technology to produce implantable components. Within the implant manufacturing sector the discussion continues for where additive metal 

Hybrid Manufacturing: Integration of Additive Technologies for Competitive Production of Complex Tools and Products
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ABSTRACT During the last decade, the development in metallic material additive manufacturing (formerly also known as Rapid Manufacturing, RM or Rapid Tooling, RT) has brought this technology from niche applications and short run tooling to be a competitive 

Additive manufacturing technologies: technology introduction and business implications
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Additive manufacturing (AM) technologies have finally hit the mainstream. After 25 years of development as rapid-prototyping techniques, the industry is transforming into a manufacturing-focused enterprise. Today, when you walk the trade show floors and attend 

Localized preheating approaches for reducing residual stress in additive manufacturing
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ABSTRACT Uniform preheating can be used to limit residual stress in the solid freeform fabrication of relatively small parts. However, in additive manufacturing processes, where a feature is deposited onto a much larger part, uniform preheating of the entire assembly is 

GT METOR: A High School Education Program in Systems Engineering and Additive Manufacturing
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ABSTRACT The Defense Advanced Research Projects Agency (DARPA) is sponsoring the MENTOR program as the outreach part of its Adaptive Vehicle Make suite of programs. Georgia Tech has been awarded a contract to involve up to 1000 high schools after 4 

Experimental investigation of pattern-less casting solution using additive manufacturingtechnique
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(AM) have opened up new avenues for fabrication of functional prototypes to the fabrication of tools and moulds for direct metal castings. Many AM techniques are commercially available to fabricate prototypes and casting tooling directly from a computer model. Three 

Fabrication of HA/PLLA Composite scaffolds for bone tissue engineering using additive manufacturing technologies
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This chapter presents an overview of a research work carried out for the rapid manufacture of bioceramics (HA)/biopolymers (PLLA) composite scaffolds by means of Selective Laser Sintering (SLS) technique, to be used for bone tissue implantation aiming to replace and/ 

Topology optimization for additive manufacturing
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ABSTRACT This paper gives an overview of the issues and opportunities for the application of topology optimization methods for additive manufacturing (AM). The main analysis issues discussed are: how to achieve the maximum geometric resolution to allow the fine 

Case Study: Additive Manufacturing of Aerospace Brackets
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Oak Ridge National Laboratory (ORNL) and Lockheed Martin have recently demonstrated the capability of additive manufacturing technologies to drastically reduce the manufacturing costs and material scrap of components for the aerospace industry. Over the past decade, 

Degradation behavior and material properties of PA12-plastic powders processed by powder based additive manufacturing technologies
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ABSTRACT Selective mask and laser sintering are powder based, additive manufacturing technologies, which allow the production of complex parts layer-by-layer. Due to the high building chamber temperature during processing, a physical and chemical degradation of 

Development and Implementation of Metals Additive Manufacturing
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Additive Manufacturing (AM) technologies build near-net shape components one layer at a time using data from 3D CAD models. AM technologies are the result of evolution of work in 3D printing and stereolithography (the STL files used to convert 3D CAD to layers for 

Additive Manufacturing of Fully Functional Fluid Power Components
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ABSTRACT The use of additive manufacturing (AM) techniques in fabricating functional fluid power components allows for more efficient fluid power systems. Pneumatic diaphragm actuators are fluid power components which harness energy from the compression of a 

Application of laser-based additive manufacturing to production of tools for friction stir welding
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ABSTRACT This paper presents a feasibility study of application of laser-based additive manufacturing to production of tools for friction-stir welding (FSW) of materials. The design and rapid manufacturing of powerful tools has become one of the major challenges in 

Bond characterization in very high power ultrasonic additive manufacturing
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ABSTRACT Solid parts were produced by Very High Power Ultrasonic Additive Manufacturing (VHP-UAM) at room temperature using 150 µm thick tapes of 6061 aluminum and 110 copper alloys. Processing was done at 20 kHz frequency over a range of parameters (26– 

Analyzing Product Lifecycle Costs for a Better Understanding of Cost Drivers in Additive Manufacturing
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ABSTRACT The costs of additive manufactured parts often seem too high in comparison to those of traditionally manufactured parts, as the information about major cost drivers, especially for additive manufactured metal parts, is weak. Therefore, a lifecycle analysis of 

The use of additive manufacturing in the custom design of orthopedic implants
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ABSTRACT This Licentiate thesis is devoted to studying the use of additive manufacturing (AM) within orthopedic implant manufacturing, especially for the customization of implants. Over slightly more than a decade, AM methods, yielding 100% dense metal parts have 

Rapid additive manufacturing of MR compatible multipinhole collimators with selective laser melting of tungsten powder
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Purpose: The construction of complex collimators with a high number of oblique pinholes is very labor intensive, expensive or is sometimes impossible with the current available techniques (drilling, milling or electric discharge machining). All these techniques are 

Additive Manufacturing: A Framework for Implementation
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ABSTRACT As mass production has migrated to developing countries, European and US companies are forced to rapidly switch towards low volume production of more innovative, customised and sustainable products with high added value. To compete in this turbulent 

The shape of things to come: frontiers in additive manufacturing
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Additive manufacturing technologies-machines that can automatically fabricate arbitrarily shaped parts, pixel by pixel, layer by layer, from almost any material-have evolved over the past three decades from limited and expensive prototyping equipment in the hands of few, 

Hyperelastic Modeling of Rubber-Like Photopolymers for Additive Manufacturing Processes
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This chapter addresses design issues of components realized with rubber-like PhotoPolymers (PP) recently introduced in Rapid Prototyping. In particular, the determination of accurate, hyperelastic, constitutive models which describe the PP 

Additive manufacturing: technology and applications
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Neil is a Reader in Additive Manufacturing and Senior Enterprise Fellow at Loughborough University, UK. To date he has secured over £3m of research funding from government and industry. He has been involved full-time in Additive Manufacturing since embarking on his 

Additive Manufacturing: What's happening and where are we going with printing in the third dimension?
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Additive Manufacturing (AM) is the term given to a group of technologies that are capable of creating physical objects from computer aided design (CAD) files by incrementally adding material such that the objects grow from nothing to completion. Most of today's AM 

Beam Structure Optimization for Additive Manufacturing based on Principal Stress Lines
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ABSTRACT The benefits of component design with cellular structures have been demonstrated in a wide variety of applications. The recent advances in additive manufacturing and high performance computing have enabled us to design a product 

Innovative process model of Ti–6Al–4V additive layer manufacturing using cold metal transfer (CMT)
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ABSTRACT New approaches to modern manufacture have emerged from Additive Layer Manufacturing (ALM) technologies over the last 25 years. These approaches provide form, fit and function to a wide range of metallic alloys and components. Wire+ Arc Additive Layer 

Exploration of Multi-Material Additive Manufacturing
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Z Chan, T Nicholes, S Onevathana ,University of Washington ,shelley.sakuda.us EXECUTIVE SUMMARY The purpose of this project is to research print heads capable of printing new materials for lowcost 3D printers. The materials that have been explored are powders, binders and composites. This research will impact the personal 3D printing 

Manufacturing complexity evaluation for additive and subtractive processes: application to hybrid modular tooling
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The aim of this work is to determine how to combine a subtractive process (HSM) and an additive process (SLS) to realize tools (dies or molds). In fact, the design and manufacturing of tools may be optimized with hybrid and modular points of view. Tools are not seen as 

Relating additive and subtractive processes teleologically for hybrid design andmanufacturing
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ABSTRACT This research proposes a methodology for hybrid design and manufacturing-- connecting processes, and silos of information, in a shared system that maximizes the strengths of each process. Additive and subtractive processes (ie fused deposition 

Development of an Additive Layer Manufacturing business model: creating an environment to support designers from concept to distribution
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ABSTRACT The effective end use of ALM products depends on establishing a dynamic business model. The model should encompass end-to-end service from design to selection of technology and a viable means for the supply and demand paradigm to function. This 

On Demand Additive Manufacturing of a Basic Surgical Kit
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S Kondor, CG Grant, P Liacouras, MAJJR Schmid ,asmedl.org 1 Background Treatment of battlefield trauma presents a unique set of challenges, among which is the logistical challenge of providing sterile surgical instruments to surgeons. Transport and supply constraints limit the quantity and variety of surgical instruments 

DEM simulation of particles of complex shapes using the multisphere method: application foradditive manufacturing
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ABSTRACT Additive manufacturing constitutes a promising production technology with potential application in a broad range of industrial areas. In this type of manufacturing process, objects are created from powder particles by adding layers of material upon one 


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