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DTSTART:20150616T140000
DTEND:20150616T150000
SUMMARY:DCAMM Seminar - Fracture Loci in Sheet Metal Forming
DESCRIPTION:<p style="text-align: left;">A DCAMM seminar&nbsp;will be presented by </p>\n<p style="text-align: center;"><strong>Professor Paulo Martins<br />\nInstituto Superior Tecnico<br />\nUniversity of Lisbon, Portugal<br />\n</strong><strong>\n<br />\n</strong></p>\n<p style="text-align: justify;"><strong>Abstract</strong>: <br />\n<br />\n<span>Fracture in sheet metal forming usually occurs as ductile fracture, rarely as brittle fracture, at the operating temperatures and rates of </span><span>loading that are typical of real processes in two different modes: (i) tensile and (ii) in-plane shear (respectively the same as modes I </span><span>and II of fracture mechanics).&nbsp;<br />\n<br />\n</span><span>The circumstances under which each mode will occur are identified in terms of plastic flow and ductile damage by means of an analytical approach to characterize fracture loci under plane stress conditions that takes anisotropy into consideration. Fracture loci is characterized </span><span>by means of the fracture forming limit line (FFL) and by the shear fracture forming limit line (SFFL) in the fracture forming limit diagram (FFLD).<br />\n<br />\n</span><span>Experiments performed with single point incremental forming and double notched test specimens loaded in tension, torsion and in-plane shear give support to the presentation and allow determining the fracture loci of AA1050-H111 aluminium sheets with 1 mm thickness. </span><span>The relation between fracture toughness and the fracture forming limits is also investigated by comparing experimental values of the </span><span>strains at fracture obtained from a truncated conical part produced by single point incremental forming and from double notched test specimens loaded in tension.</span></p>\n<p style="text-align: justify;"><span>\n</span><span>\n</span><span>Danish pastry, coffee and tea will be served 15 minutes before the seminar starts.<br />\n&nbsp;&nbsp;</span><br />\nAll interested persons are invited</p>
X-ALT-DESC;FMTTYPE=text/html:<p style="text-align: left;">A DCAMM seminar&nbsp;will be presented by </p>\n<p style="text-align: center;"><strong>Professor Paulo Martins<br />\nInstituto Superior Tecnico<br />\nUniversity of Lisbon, Portugal<br />\n</strong><strong>\n<br />\n</strong></p>\n<p style="text-align: justify;"><strong>Abstract</strong>: <br />\n<br />\n<span>Fracture in sheet metal forming usually occurs as ductile fracture, rarely as brittle fracture, at the operating temperatures and rates of </span><span>loading that are typical of real processes in two different modes: (i) tensile and (ii) in-plane shear (respectively the same as modes I </span><span>and II of fracture mechanics).&nbsp;<br />\n<br />\n</span><span>The circumstances under which each mode will occur are identified in terms of plastic flow and ductile damage by means of an analytical approach to characterize fracture loci under plane stress conditions that takes anisotropy into consideration. Fracture loci is characterized </span><span>by means of the fracture forming limit line (FFL) and by the shear fracture forming limit line (SFFL) in the fracture forming limit diagram (FFLD).<br />\n<br />\n</span><span>Experiments performed with single point incremental forming and double notched test specimens loaded in tension, torsion and in-plane shear give support to the presentation and allow determining the fracture loci of AA1050-H111 aluminium sheets with 1 mm thickness. </span><span>The relation between fracture toughness and the fracture forming limits is also investigated by comparing experimental values of the </span><span>strains at fracture obtained from a truncated conical part produced by single point incremental forming and from double notched test specimens loaded in tension.</span></p>\n<p style="text-align: justify;"><span>\n</span><span>\n</span><span>Danish pastry, coffee and tea will be served 15 minutes before the seminar starts.<br />\n&nbsp;&nbsp;</span><br />\nAll interested persons are invited</p>

URL:http://www.dcamm.dk/da/Kalender/2015/06/Seminar_No_686
DTSTAMP:20260929T105700Z
UID:{21CF14E4-8E6E-4603-B246-6E96A84A33DA}-20150616T140000-20150616T140000
LOCATION: Room 105, Building 404, Technical University of Denmark
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