Development of Monitoring and Control System for Laser Remanufacturing

Hu, Xiaojun; Kong, Fanchao; Yao, Jian Hua

doi:10.4028/www.scientific.net/amm.44-47.81

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…In research work conducted so far, low-power laser and IR diodes are used to transmit a signal and calculate the flow of the powder as an inverse ratio of the received amplitude. A monitoring system has been developed in Hu et al (2011) via an IR high-speed camera integrated with the laser beam for achieving a stable powder feed rate. Moreover, in Balu et al (2012) high-speed cameras were used to estimate the powder flux and speed by placing the cameras near to the extrude nozzle.…”

Section: Direct Energy Deposition Proceduresmentioning

confidence: 99%

Non-destructive quality control methods in additive manufacturing: a survey

Charalampous

Kostavelis

Tzovaras

2020

RPJ

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Purpose In recent years, additive manufacturing (AM) technology has been acknowledged as an efficient method for producing geometrical complex objects with a wide range of applications. However, dimensional inaccuracies and presence of defects hinder the broad adaption of AM procedures. These factors arouse concerns regarding the quality of the products produced with AM and the utilization of quality control (QC) techniques constitutes a must to further support this emerging technology. This paper aims to assist researchers to obtain a clear sight of what are the trends and what has been inspected so far concerning non-destructive testing (NDT) QC methods in AM. Design/methodology/approach In this paper, a survey on research advances on non-destructive QC procedures used in AM technology has been conducted. The paper is organized as follows: Section 2 discusses the existing NDT methods applied for the examination of the feedstock material, i.e. incoming quality control (IQC). Section 3 outlines the inspection methods for in situ QC, while Section 4 presents the methods of NDT applied after the manufacturing process i.e. outgoing QC methods. In Section 5, statistical QC methods used in AM technologies are documented. Future trends and challenges are included in Section 6 and conclusions are drawn in Section 7. Findings The primary scope of the study is to present the available and reliable NDT methods applied in every AM technology and all stages of the process. Most of the developed techniques so far are concentrated mainly in the inspection of the manufactured part during and post the AM process, compared to prior to the procedure. Moreover, material extrusion, direct energy deposition and powder bed processes are the focal points of the research in NDT methods applied in AM. Originality/value This literature review paper is the first to collect the latest and the most compatible techniques to evaluate the quality of parts produced by the main AM processes prior, during and after the manufacturing procedure.

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Section: Direct Energy Deposition Proceduresmentioning

confidence: 99%

Non-destructive quality control methods in additive manufacturing: a survey

Charalampous

Kostavelis

Tzovaras

2020

RPJ

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Section: Directed Energy Deposition Processesmentioning

confidence: 99%

“…For the studies on material delivery rate, Hu et al (2011) developed a monitoring and control system using IR diodes and low-power laser. This system is designed for sensing the powder flow rate out of nozzle to ensure consistent powder feed rate (Hu et al, 2011). In addition, Smurov et al (2012) used high-speed cameras for calculating the powder speed and flux by positioning the cameras next to the nozzle head (Smurov et al, 2012).…”

Section: Directed Energy Deposition Processesmentioning

confidence: 99%

A review on quality control in additive manufacturing

Kim

Lin

Tseng

2018

RPJ

228

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Purpose -The usage of additive manufacturing (AM) technology in industries has reached up to 50 per cent as prototype or end-product. However, for AM products to be directly used as final products, AM product should be produced through advanced quality control process, which has a capability to be able to prove and reach their desire repeatability, reproducibility, reliability and preciseness. Therefore, there is a need to review quality-related research in terms of AM technology and guide AM industry in the future direction of AM development. Design/methodology/approach -This paper overviews research progress regarding the QC in AM technology. The focus of the study is on manufacturing quality issues and needs that are to be developed and optimized, and further suggests ideas and directions toward the quality improvement for future AM technology. This paper is organized as follows. Section 2 starts by conducting a comprehensive review of the literature studies on progress of quality control, issues and challenges regarding quality improvement in seven different AM techniques. Next, Section 3 provides classification of the research findings, and lastly, Section 4 discusses the challenges and future trends. Findings -This paper presents a review on quality control in seven different techniques in AM technology and provides detailed discussions in each quality process stage. Most of the AM techniques have a trend using in-situ sensors and cameras to acquire process data for real-time monitoring and quality analysis. Procedures such as extrusion-based processes (EBP) have further advanced in data analytics and predictive algorithms-based research regarding mechanical properties and optimal printing parameters. Moreover, compared to others, the material jetting progresses technique has advanced in a system integrated with closed-feedback loop, machine vision and image processing to minimize quality issues during printing process.Research limitations/implications -This paper is limited to reviewing of only seven techniques of AM technology, which includes photopolymer vat processes, material jetting processes, binder jetting processes, extrusion-based processes, powder bed fusion processes, directed energy deposition processes and sheet lamination processes. This paper would impact on the improvement of quality control in AM industries such as industrial, automotive, medical, aerospace and military production. Originality/value -Additive manufacturing technology, in terms of quality control has yet to be reviewed.

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“…Accordingly, some researchers devote their efforts into powder flow monitoring [151][152][153]. Due to this operating principle, it is necessary to ensure consistency of powder feed.…”

Section: -4 / Vol 136 December 2014mentioning

confidence: 99%

A Review on Process Monitoring and Control in Metal-Based Additive Manufacturing

Tapia

Elwany

2014

Journal of Manufacturing Science and Engineering

572

188

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There is consensus among both the research and industrial communities, and even the general public, that additive manufacturing (AM) processes capable o f processing metal lic materials are a set o f game changing technologies that offer unique capabilities with tremendous application potential that cannot be matched by traditional manufacturing technologies. Unfortunately, with all what AM has to offer, the quality and repeatability o f metal parts still hamper significantly their widespread as viable manufacturing proc esses. This is particularly true in industrial sectors with stringent requirements on part quality such as the aerospace and healthcare sectors. One approach to overcome this challenge that has recently been receiving increasing attention is process monitoring and real-time process control to enhance part quality and repeatability. This has been addressed by numerous research efforts in the past decade and continues to be identified as a high priority research goal. In this review paper, we fill an important gap in the liter ature represented by the absence o f one single source that comprehensively describes what has been achieved and provides insight on what still needs to be achieved in the field o f process monitoring and control fo r metal-based AM processes.

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Development of Monitoring and Control System for Laser Remanufacturing

Cited by 8 publications

References 3 publications

Non-destructive quality control methods in additive manufacturing: a survey

Non-destructive quality control methods in additive manufacturing: a survey

A review on quality control in additive manufacturing

A Review on Process Monitoring and Control in Metal-Based Additive Manufacturing

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