Performance sensitivity analysis of the mesh-free random grid method for whole field strain measurements

Iliopoulos, AP; Michopoulos, JG; Andrianopoulos, NP

dc.contributor.author	Iliopoulos, AP	en
dc.contributor.author	Michopoulos, JG	en
dc.contributor.author	Andrianopoulos, NP	en
dc.date.accessioned	2014-03-01T02:52:05Z
dc.date.available	2014-03-01T02:52:05Z
dc.date.issued	2009	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35836
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-69949182836&partnerID=40&md5=670f5bab0cb4a8de5b72d3a9f603c920	en
dc.subject	Digital imaging	en
dc.subject	Displacement measurement	en
dc.subject	Material characterization	en
dc.subject	Simulation	en
dc.subject	Whole field strain measurement	en
dc.subject.other	Computational parameters	en
dc.subject.other	Controlled variables	en
dc.subject.other	Design specification	en
dc.subject.other	Digital imaging	en
dc.subject.other	Displacement measurements	en
dc.subject.other	Experimental setup	en
dc.subject.other	Material characterization	en
dc.subject.other	Material characterizations	en
dc.subject.other	Meshfree	en
dc.subject.other	Performance characteristics	en
dc.subject.other	Performance sensitivity	en
dc.subject.other	Performance specifications	en
dc.subject.other	Random grids	en
dc.subject.other	Approximation algorithms	en
dc.subject.other	Bubbles (in fluids)	en
dc.subject.other	Computational efficiency	en
dc.subject.other	Computational mechanics	en
dc.subject.other	Measurements	en
dc.subject.other	Sensitivity analysis	en
dc.subject.other	Specifications	en
dc.subject.other	Strain gages	en
dc.subject.other	Strain measurement	en
dc.title	Performance sensitivity analysis of the mesh-free random grid method for whole field strain measurements	en
heal.type	conferenceItem	en
heal.publicationDate	2009	en
heal.abstract	In responding to the needs of the material characterization community, the recently developed mesh-free random grid method (MFRGM) has been exhibiting very promising characteristics of accuracy, adaptability, implementation flexibility and efficiency. In order to address the design specification of the method according to the intended application, in the present paper we are presenting a sensitivity analysis that aids into determining the effects of the experimental and computational parameters characterizing the MFRGM in terms of its performance. There are two sets of parameters that affect the performance characteristics of MFRGM for whole field strain measurement applications. The first set involves parameters associated with the characteristics of the experimental setup and the random grid applied on the specimen under measurement. The second set involves the computational characteristics of the mesh-free approximation and the solution (minimization) algorithms utilized. The performance characteristics of the MFRGM are mainly its accuracy, sensitivity, smoothing properties and efficiency. In the present paper we are presenting a classification of the first set of parameters as well as their relationship followed by the above mentioned sensitivity analysis to establish the influence trends in the performance characteristics with the intension tooptimize the selection of the user controlled variables for a desired performance specification. Copyright © 2008 by ASME.	en
heal.journalName	2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008	en
dc.identifier.volume	3	en
dc.identifier.issue	PART A	en
dc.identifier.spage	545	en
dc.identifier.epage	555	en