Zobrazeno 1 - 10
of 17
pro vyhledávání: '"J H Tweed"'
Publikováno v:
Powder Metallurgy. 51:150-159
The paper describes a series of tests that use an instrumented die, unconfined compression of a cylinder, three point bending and Brazilian disc test to explore the elastic modulus and tensile failure in powder compacts. Through the use of common pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7af9710b43f0b8bbe6dd4b4a72b2cec5
https://doi.org/10.1179/174329008x284994
https://doi.org/10.1179/174329008x284994
Publikováno v:
Powder Metallurgy. 51:14-30
The development of a floating die shear plate apparatus and its use to explore lubrication mechanisms (both admixed and die wall) and to assess the effectiveness of lubrication under a wide range of both compaction and normal loading conditions are d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98e6f4618e93751166abd178ef1dde2c
https://doi.org/10.1179/174329008x271646
https://doi.org/10.1179/174329008x271646
Publikováno v:
Powder Metallurgy. 45:345-353
The paper explores the use of a shear plate technique to measure the frictional characteristics between a compacted powder and a target surface. The study confirms that the shear plate technique is valid to measure these frictional characteristics an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::813b82065e0d58fa0fde9845ce399a1d
https://doi.org/10.1179/003258902225007069
https://doi.org/10.1179/003258902225007069
Publikováno v:
Powder Metallurgy. 44:25-33
An instrumented die has been developed to measure friction and constitutive data on powders during compaction. Such data is useful for quality assurance and as input data for computer models of die compaction. The measurement system consists of a die
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bec06d5dcc7c09182c3993e9d279403
https://doi.org/10.1179/003258901666130
https://doi.org/10.1179/003258901666130
Numerical simulations of manufacturing processes rely on material characterisation. This highlights the need for a close combination of experimental and numerical work to model cold die powder compaction. Based on a previous experimental work by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66179c06f011d638d9e3ace89d0271c3
https://cronfa.swan.ac.uk/Record/cronfa28328
https://cronfa.swan.ac.uk/Record/cronfa28328
This article addresses the occurrence of crack-related failure within the powder compaction cycle. Both tensile and shear cracks are considered together with the challenges associated with their detection. Experimental data are presented from the com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af5d32897d9de8da46cdba27e00f838f
https://cronfa.swan.ac.uk/Record/cronfa6149
https://cronfa.swan.ac.uk/Record/cronfa6149
Cold die powder compaction can be a challenging manufacturing route for complex components. Setting the filling and pressing tools is a difficult and time consuming operation. Numerical methods can assist process engineers; however, the result can on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0106711cf73e71e10935daf06828c78c
https://cronfa.swan.ac.uk/Record/cronfa28330
https://cronfa.swan.ac.uk/Record/cronfa28330
Autor:
J. H. Tweed, E. A. Feest
Publikováno v:
Materials Science and Technology. 8:308-316
Processing routes for intermetallic based materials are briefly surveyed and compared. For monolithic intermetallics the two main factors determining process routes both derive from the low room temperature ductility of most intermetallics. They are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3cbcdf0c5d77d0bdbdb4db9694d849f
https://doi.org/10.1179/mst.1992.8.4.308
https://doi.org/10.1179/mst.1992.8.4.308
Publikováno v:
Engineering Materials and Processes ISBN: 9781846280986
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fec45c3389e2a438a1533cacbaf659e
https://doi.org/10.1007/978-1-84628-099-3_1
https://doi.org/10.1007/978-1-84628-099-3_1
Publikováno v:
Engineering Materials and Processes ISBN: 9781846280986
In order to model the compaction of powder components, we need to be able to specify the starting conditions in terms of punch positions and powder fill density, the powder properties during compaction and the motions of the press tooling during the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9728eebe26d2dd022328292070ff039
https://doi.org/10.1007/978-1-84628-099-3_11
https://doi.org/10.1007/978-1-84628-099-3_11