Fibre laser cutting of CFRP thin sheets by multi-passes scan technique

Leone, Claudio; Genna, Silvio; Tagliaferri, V.

doi:10.1016/j.optlaseng.2013.07.027

Cited by 116 publications

(50 citation statements)

References 22 publications

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“…As control factor the pulse power and the grid dimension were adopted. This because in pulsed laser, pulse energy and power play a central role since they determine the laser beam-material interaction mode, amount of worked material, and thermal effect [29][30][31][32]. On the other hand, in order to fill the sample area, a square grid of dimples (where each dimple was created by a single laser shot, Fig.…”

Section: Methodsmentioning

confidence: 99%

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

et al. 2015

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The use of adhesives in place of traditional joining techniques as welding and riveting is becoming increasingly common in structural design. Compared to other conventional joining processes, adhesive bonding offers several advantages: including acoustic insulation, vibration attenuation, structure lightening, corrosion reduction and uniform stress distribution. These benefits can be offset if the surfaces to be bonded are not carefully cleaned, degreased and prepared. Many approaches to surface treatments based on physical or chemical modifications have been developed in the years in order to improve the surface activity. Although widely used and very efficient, these techniques present several disadvantages. Physical methods based on mechanical abrasion are supposed to extend bonding area as they increase the roughness, but cause an extensive degradation to the specimens and they are often not easy to reproduce. On the other hand, chemical treatments are typically used with the aim of modifying both morphology and chemical structure of the substrates layers, but they present serious environmental problems of waste disposal, which has moved investigations to an industrial alternative to these processes. According, the use of energetic methods of surface cleaning, such as laser and plasma cleaning processes have been recently consolidated since they are useful to modify the topmost layers of the substrates, increasing their reactivity, without affecting the bulk material properties. These treatments offer an effective and environment-friendly processing of different materials, providing strong and durable bonds with adhesives through modification of the surface morphology and functionalities. In this study, the effects of laser and low pressure plasma treatments on mechanical properties of adhesive bonded joints has been investigated and compared performing lap-shear tests

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Section: Methodsmentioning

confidence: 99%

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

et al. 2015

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“…In this phase, pre-design sheets were drawn up following the systematic approach for planning the designed experiments proposed by Montgomery [40] and Coleman and Montgomery [41] and successfully adopted in Leone et al [36,37], Palumbo et al [42], Dittrich et al [43], Squillace et al [44]. The sheets were implemented on the basis of the preliminary tests.…”

Section: Methodsmentioning

confidence: 99%

“…2, it can be noticed that both P e and P p decrease as frequency increases. Pulse energy and pulse power play a central role in laser machining and micromachining since they determine the fluence (energy density) and the irradiance (power density) and then the laser beam-material interaction mode, the amount of machined volume, and the thermal damage extension [31][32][33][34][35][36][37][38][39]. Accordingly, and taking into account the difficulties in measuring fluence or irradiance, this study focuses on pulse power rather than pulse frequency, that is a settable parameter.…”

Section: Equipmentmentioning

confidence: 99%

Resource efficient low power laser cleaning of compact discs for material reuse by polycarbonate recovery

Leone

Genna

Caggiano

2015

CIRP Journal of Manufacturing Science and Technology

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“…The factors affecting on the HAZ are studied a lot in terms of processing. High cutting rate makes HAZ with less area [4,12]. In the case of processing with pulsed laser, the overlap of spot of laser extends the HAZ [13].…”

Section: Introductionmentioning

confidence: 99%

Infrared stress measurements of thermal damage to laser-processed carbon fiber reinforced plastics

Muramatsu

Harada

Suzuki

et al. 2015

Composites Part A: Applied Science and Manufacturing

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Fibre laser cutting of CFRP thin sheets by multi-passes scan technique

Cited by 116 publications

References 22 publications

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

Resource efficient low power laser cleaning of compact discs for material reuse by polycarbonate recovery

Infrared stress measurements of thermal damage to laser-processed carbon fiber reinforced plastics

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