Influence of process parameters during pulsed Nd:YAG laser cutting of nickel-base superalloys

Thawari, G.; Sundar, Jeyaperumal Kalyana; Sundararajan, G.; Joshi, Shrikant V.

doi:10.1016/j.jmatprotec.2005.05.021

Cited by 143 publications

(59 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cross sections of the samples were obtained with the laser cutting system [21], which could cut the Ni-Fe samples efficiently without generations of deformation, damage, or residual stress. …”

Section: Investigation Of the Section Morphologiesmentioning

confidence: 99%

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

Bai

Shen

Zhang

et al. 2018

Metals

View full text Add to dashboard Cite

Abstract:The improvement of sound absorption performance of porous metal is a focus of research in the field of noise reduction. Influences of compression ratios on sound absorption performance of a porous nickel-iron (Ni-Fe) alloy were investigated. The samples were compressed with ratios from 10% to 80% at an interval of 10%. Based on the standing wave method, sound absorption coefficients of compressed samples with different thicknesses were obtained. It could be found that with the same compression ratio, sound absorption performance was improved with the increase of thickness. Based on the modified Johnson-Allard model with a correction factor, the sound absorption coefficient of the porous Ni-Fe with a thickness of 20 mm for different compression ratios was derived, whose aim was to quantificationally analyze influences of the compression ratio. The results indicated that the sample with a compression ratio of 70% exhibited optimal sound absorption performance, and its average sound absorption coefficient reached 88.97% in a frequency range of 1000-6000 Hz. Meanwhile, the section morphologies of compressed samples were investigated by a scanning electron microscope, which studied the sound absorption performance by analyzing structures of the porous Ni-Fe samples with different compression ratios. The obtained achievements will promote the application of the porous Ni-Fe alloy in the field of acoustics.

show abstract

Section: Investigation Of the Section Morphologiesmentioning

confidence: 99%

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

Bai

Shen

Zhang

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Gases employed include oxygen, nitrogen and argon. A similar study is carried on Ni base super alloys [7].…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of laser cutting operations

Gadallah

Abdu

2015

Manufacturing Rev.

View full text Add to dashboard Cite

-Laser beam cutting is one important nontraditional machining process. This paper optimizes the parameters of laser beam cutting parameters of stainless steel (316L) considering the effect of input parameters such as power, oxygen pressure, frequency and cutting speed. Statistical design of experiments is carried in three different levels and process responses such as average kerf taper (T a ), surface roughness (R a ) and heat affected zones are measured accordingly. A response surface model is developed as a function of the process parameters. Responses predicted by the models (as per Taguchi's L 27 OA) are employed to search for an optimal combination to achieve desired process yield. Response Surface Models (RSMs) are developed for mean responses, S/N ratio, and standard deviation of responses. Optimization models are formulated as single objective optimization problem subject to process constraints. Models are formulated based on Analysis of Variance (ANOVA) and optimized using Matlab developed environment. Optimum solutions are compared with Taguchi Methodology results. As such, practicing engineers have means to model, analyze and optimize nontraditional machining processes. Validation experiments are carried to verify the developed models with success.

show abstract

“…Based on the generating media, lasers can be classified into three groups: (1) carbon dioxide (CO 2 ) lasers, (2) neodymium (Nd) lasers and (3) neodymium yttrium-aluminium-garnet (Nd-YAG) lasers (Thawari et al 2005;Mathew et al 1999;Schuocker 1989). The CO 2 lasers can be used for boring, cutting and engraving (Chow et al 2012;Kan 2014b).…”

Section: Classification Based On Generating Mediamentioning

confidence: 99%

The use of laser in garment manufacturing: an overview

Nayak

Padhye

2016

Fash Text

View full text Add to dashboard Cite

Laser is being used in apparel industry from nineteenth century for various garment manufacturing applications. There are several advantages of using laser over the conventional processes in cutting, engraving, embossing, denim fading and other applications. In addition, product damage potential is reduced, no/less consumables are needed and no problem of toxic by-product disposal as found in some processes. Today's laser equipment is a result of continuous research and development of earlier products, which has undergone several changes. The initial laser systems were cumbersome, hard to run and difficult to maintain. However, the modern laser systems are simpler in operation and maintenance. Furthermore, the earlier systems were involved with more safety issues and needed the gasses to be constantly replenished. The garment manufactures around the globe should take the advantage of laser application in the post multi-fibre agreement regime to make their products more competitive. This review focuses on the technology of laser including various classifications. In addition it includes the applications of laser in garment manufacturing, their potential hazards and health related concerns.

show abstract

Influence of process parameters during pulsed Nd:YAG laser cutting of nickel-base superalloys

Cited by 143 publications

References 20 publications

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

Modeling and optimization of laser cutting operations

The use of laser in garment manufacturing: an overview

Contact Info

Product

Resources

About