Water-assisted laser thermal shock machining of alumina

Barnes, Christopher; Shrotriya, Pranav; Molian, Pal

doi:10.1016/j.ijmachtools.2007.04.003

Cited by 42 publications

(18 citation statements)

References 6 publications

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“…Then the pure water-jet trailed the path of the laser beam on the workpiece leading to thermal shock fracture in this zone. Barnes et al (2007) explained that the increase of cutting efficiency was due to the kinetic energy of the water jet that removes the material and washes debris away. Based on the previous research, Kalyanasundaram et al (2010) established and then validated a model which was used for the determination of transient temperature and stress distribution.…”

Section: Laser Assisted Water-jet Cuttingmentioning

confidence: 99%

A review of hybrid manufacturing processes – state of the art and future perspectives

Zhu

Dhokia

Nassehi

et al. 2013

International Journal of Computer Integrated Manufacturing

253

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Today, hybrid manufacturing technology has drawn significant interests from both academia and industry due to the capability to make products in a more efficient and productive way. Although there is no specific consensus on the definition of the term 'hybrid processes', researchers have explored a number of approaches to combine different manufacturing processes with the similar objectives of improving surface integrity, increasing material removal rate, reducing tool wear, reducing production time and extending application areas. Thus, hybrid processes open up new opportunities and applications for manufacturing various components which are not able to be produced economically by processes on their own. This review paper starts with the classification of current manufacturing processes based on processes being defined as additive, subtractive, transformative, joining and dividing. Definitions of hybrid processes from other researchers in the literature are then introduced. The major part of this paper reviews existing hybrid processes reported over the past two decades. Finally, this paper attempts to propose possible definitions of hybrid processes along with the authors' classification, followed by discussion of their developments, limitations and future research needs.

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Section: Laser Assisted Water-jet Cuttingmentioning

confidence: 99%

A review of hybrid manufacturing processes – state of the art and future perspectives

Zhu

Dhokia

Nassehi

et al. 2013

International Journal of Computer Integrated Manufacturing

253

View full text Add to dashboard Cite

show abstract

“…For assurance of the quality in under water laser processing, the effect of water on the metallurgical behavior should be considered [20]. In order to exclude the water around the remelting zone (RMZ), a local dry cavity on the workpiece was created approximately 5 mm in diameter by an air stream coaxial with laser beam [15].…”

Section: Models Descriptionsmentioning

confidence: 99%

“…In respect to under water laser cutting of thin alumina plate, with a dry region protecting the melting area, the surface cracks yielded tend to be rare and controllable [15]. Therefore, it can be predicted that finer thermal stresses associated with these good results will be received in this water-assisted melting process.…”

Section: Residual Stress In Melted Samplementioning

confidence: 99%

“…Since that, only a small volume of material is heated due to diffusion. In contrast in dry air, slow surface cooling leads to heating up of a larger volume of material due to diffusion away from the fusion zone [15].…”

Section: Residual Stress In Melted Samplementioning

confidence: 99%

“…Since 1970s, laser processing in presence of liquid water has been studied, and to date, a series of investigations have been done for water-assisted processes of steam laser cleaning (SLC) [10][11][12], laser shock processing (LSP) [13][14][15] and laser cutting (LC) [16,17]. It was shown that the effect of water in these processes mainly consists of laser energy conversion, materials transport and shock waves induction, as well as cooling the workpiece more effectively and useful chemical reactions [8].…”

Section: Introductionmentioning

confidence: 99%

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