{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,29]],"date-time":"2022-03-29T14:00:49Z","timestamp":1648562449271},"reference-count":13,"publisher":"ASME International","issue":"4","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,12,1]]},"abstract":"<jats:p>Engineering surfaces comprise form and waviness errors, which are separated from the measured surface by establishing a reference surface that represents these errors. An attempt is made for the first time to fit a reference surface for simultaneous separation of form and waviness errors. A second-degree polynomial and a set of sinusoidal functions are taken as basis functions to represent form and waviness, respectively, and fitting is done using a nonlinear least-squares method. Different examples of surfaces are considered and a comparison is also made with 3D Gaussian filter to bring out the nature of reference surfaces obtained by the present fitting approach.<\/jats:p>","DOI":"10.1115\/1.2353851","type":"journal-article","created":{"date-parts":[[2006,11,21]],"date-time":"2006-11-21T20:39:11Z","timestamp":1164141551000},"page":"349-354","update-policy":"http:\/\/dx.doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":6,"title":["Fitting of Reference Surfaces for Engineering Surfaces by Nonlinear Least-Squares Technique"],"prefix":"10.1115","volume":"6","author":[{"given":"Jagadeesha","family":"Kumar","sequence":"first","affiliation":[{"name":"Manufacturing Engineering Section, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai \u2013 600036, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. 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