Conventional Machining Operations

Sheikh-Ahmad, Jamal

doi:10.1007/978-0-387-68619-6_2

Cited by 55 publications

(87 citation statements)

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“…In addition, the alloy content in the material can also affect the machining temperatures, Ozek et al [ 17 ] previously reported that when drilling different aluminum alloys (A5083, A6061, A7075-T651, A1050), the temperature of the workpiece can reach as high as 242 °C in A5083 and 164 °C in A1050 using the same cutting conditions due to the difference in their alloying content. The heat generated when machining composites is distributed differently than when machining metals [ 18 ]. In metals, approximately 75% of the heat is generated at the shear zone, 20% at the chip sliding on the tool face and about 5% is produced due to plastic deformation in the metallic workpiece [ 16 ] and between 80%–85% of the thermal energy generated is carried away by the evacuated chips [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…The cutting temperature in drilling is strongly dependent on cutting speed and feed rate [ 18 ]. Fliescher et al [ 22 ] previously reported that the workpiece takes a large share of the heat distribution during the drilling process which could be anything between 10%–35% compared to turning and milling operations in which the workpiece takes around 1.1%–20% and 1.3%–25% of the heat, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Workpiece Temperature during Drilling of GLARE Fiber Metal Laminates Using Infrared Techniques: Effect of Cutting Parameters, Fiber Orientation and Spray Mist Application

Giasin

Ayvar-Soberanis

2016

Materials

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The rise in cutting temperatures during the machining process can influence the final quality of the machined part. The impact of cutting temperatures is more critical when machining composite-metal stacks and fiber metal laminates due to the stacking nature of those hybrids which subjects the composite to heat from direct contact with metallic part of the stack and the evacuated hot chips. In this paper, the workpiece surface temperature of two grades of fiber metal laminates commercially know as GLARE is investigated. An experimental study was carried out using thermocouples and infrared thermography to determine the emissivity of the upper, lower and side surfaces of GLARE laminates. In addition, infrared thermography was used to determine the maximum temperature of the bottom surface of machined holes during drilling GLARE under dry and minimum quantity lubrication (MQL) cooling conditions under different cutting parameters. The results showed that during the machining process, the workpiece surface temperature increased with the increase in feed rate and fiber orientation influenced the developed temperature in the laminate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Workpiece Temperature during Drilling of GLARE Fiber Metal Laminates Using Infrared Techniques: Effect of Cutting Parameters, Fiber Orientation and Spray Mist Application

Giasin

Ayvar-Soberanis

2016

Materials

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“…Because the cutting forces affect the surface quality [ 14 ], their values were recorded during machining. The cutting forces were measured using a Kistler dynamometer, model 9257B (Kistler, Winterthur, Switzerland), mounted in the machine spindle.…”

Section: Methodsmentioning

confidence: 99%

“…Surface geometry after machining is the result of several factors. One of them is the machine tool kinematics, which is mainly influenced by the tool wear machine vibrations and inhomogeneity of the workpiece [ 14 ]. The processing of the Al/CFRP could result in unsatisfactory quality and dimensional accuracy of the workpiece compared to the processing of single materials.…”

Section: Introductionmentioning

confidence: 99%

“…These types of materials are at times bonded in large-sized structures, where height deviations may affect the strength of the adhesive joints. The quality after milling is defined by the surface finish, surface integrity and homogeneity of the defect, where a metal layer has a different quality than a CFRP layer [ 14 ]. One way to achieve a high-quality surface after the milling process is to reduce the cutting forces.…”

Section: Introductionmentioning

confidence: 99%

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Milling of an Al/CFRP Sandwich Construction with Non-Coated and TiAlN-Coated Tools

et al. 2020

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In this study, the effect of cutting parameters on the quality of an Al/CFRP sandwich structure (aluminium alloy–carbon fibre reinforced polymer) after milling with uncoated and TiAlN-coated tools was examined. The results of the cutting force were also investigated. The research was conducted in a VMC 800 HS vertical machining centre with a variable cutting speed and feed. The milling process was carried out using a non-coated, two-blade carbide milling cutter with a 35° helix angle and an analogous tool with a TiAlN coating. The surface quality was characterised in terms of the height deviation, which is one of the shape deviations after machining hybrid materials. The research showed that the maximum (77.60 µm) and minimum (1.78 µm) values of the height deviations were obtained using the tool with a TiAlN coating. It was found that the tested factors had significant effects on the height deviation, where the feed had the greatest influence and the cutting speed had the lowest influence on the surface quality. The tested factors were not statistically significant in terms of the cutting force.

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Wear properties of natural fiber based composites – A brief review

Alagumalai,

Babu,

et al. 2023

Polymers for Advanced Techs

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Natural fiber composites' appealing properties have enabled their use in a wide range of engineering applications, including automotive and structural applications. Wear is a common issue in automotive and structural applications, increasing the likelihood of material failure. As a result, composites with increased wear resistance are required. Natural fiber composites have completely different wear properties than metals. Understanding the wear mechanism of natural fiber composites is critical for their potential use in a variety of applications. Wear is of different types, each with its own mechanism of material loss. Wear is determined by material properties, such as matrix and reinforcement properties. The critical factors influencing the wear performance of natural fiber composites are fiber loading, fiber orientation, fiber length, and fiber interface. This review attempted to investigate the different types of wear in fiber composites and their impact on natural fiber composites. This article could serve as a one‐stop shop for learning about the wear characteristics of natural fiber composites.

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Conventional Machining Operations

Cited by 55 publications

References 1 publication

Evaluation of Workpiece Temperature during Drilling of GLARE Fiber Metal Laminates Using Infrared Techniques: Effect of Cutting Parameters, Fiber Orientation and Spray Mist Application

Evaluation of Workpiece Temperature during Drilling of GLARE Fiber Metal Laminates Using Infrared Techniques: Effect of Cutting Parameters, Fiber Orientation and Spray Mist Application

Milling of an Al/CFRP Sandwich Construction with Non-Coated and TiAlN-Coated Tools

Wear properties of natural fiber based composites – A brief review

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