Zobrazeno 1 - 10
of 97
pro vyhledávání: '"David K. Aspinwall"'
Fatigue performance of surface ground and wire electrical discharge machined TiNi shape memory alloy
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 236:355-362
Fatigue performance is a major consideration for critical aerospace components. The influence of surface grinding and rough/finish wire electrical discharge machining (WEDM) on the high cycle fatigue performance of a binary Ti50.8-Ni49.2 shape memory
Publikováno v:
CIRP Annals. 69:109-112
A novel analytical model to describe entrance burr formation when drilling ductile metals as a function of tool geometry (point/helix angles, diameter), operating parameters (cutting speed, feed rate) and workpiece material properties, was initially
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 98:2461-2468
Following a brief review on the turning of nickel-based superalloys, the paper evaluates the machinability and workpiece surface integrity of a powder metallurgy HIP-ed (PHIP) RR1000 alloy, involving two phases of turning experiments using TiN/Al2O3/
Publikováno v:
CIRP Annals. 67:103-108
Following drilling, fatigue life trials were performed on as-drilled and deburred specimens made from Ti–6Al–4V, AA7010 and AA2024, with feed rates varied at 2 levels. Deburring dramatically increased the fatigue performance of the Ti–6Al–4V
Publikováno v:
Procedia CIRP. 71:407-412
Drilling carbon fibre reinforced plastic (CFRP) composites is often accompanied by workpiece delamination particularly at hole exit, which is dependent to a large extent on the applied feed rate/thrust force. In this paper, a variable feed rate strat
Autor:
S.L. Soo, Wayne Leahy, Rachid M'Saoubi, C. Carr, Sam Bradley, Chunliang Kuo, David K. Aspinwall
Publikováno v:
Journal of Manufacturing Processes. 31:286-300
The paper details experimental trials to evaluate the performance of uncoated and PVD coated tungsten carbide twist drills, for single shot drilling of 3-layer metallic-composite stack workpieces. A full factorial experiment was undertaken involving
Publikováno v:
SAE International Journal of Aerospace. 9:198-207
The effect of surface and subsurface condition on the fatigue life of Ti–25V–15Cr–2Al–0.2C %wt alloy
Publikováno v:
CIRP Annals. 65:523-528
Different workpiece surface and subsurface conditions from machining operations involving high speed milling, reciprocal surface grinding and creep feed grinding together with polishing are investigated relating to the fatigue life of Ti–25V–15Cr
Autor:
Sarmad Ali Khan, Sein Leung Soo, Rachid M'Saoubi, D. Pearson, Gregor Kappmeyer, P. Harden, Andrew L. Mantle, David K. Aspinwall
Publikováno v:
CIRP Annals. 65:89-92
Five different coatings and two PCBN grades were evaluated when high speed turning Inconel 718. Tool life was 40% higher when employing TiSiN coated over uncoated inserts at 200 m/min. When operating at 300–450 m/min however, coatings provided no a
Publikováno v:
CIRP Journal of Manufacturing Science and Technology. 11:36-44
The paper details machinability experiments involving creep feed grinding of Ti–45Al–2Mn–2Nb + 0.8 vol.% TiB 2 intermetallic alloy using single layer electroplated diamond grinding wheels. A wheel speed of 35 m/s and a feed rate of 150 m/min we