Retraction notice: Optimization of friction, wear and temperature in graphite-reinforced PTFE/bronze composite bearings using Taguchi analysis

The publisher of Rapid Prototyping Journal wishes to retract the article Kumar N., Kumar V., Kumar A. and Kumar Y. (2026), “Optimization of friction, wear and temperature in graphite-reinforced PTFE/bronze composite bearings using Taguchi analysis” Rapid Prototyping Journal, Vol. ahead-of-print No. ahead-of-print. Link to Optimization of friction, wear and temperature in graphite-reinforced PTFE/bronze composite bearings using Taguchi analysisLink to the cited article. It has been brought to our attention that a large portion of this article is taken, without full and proper attribution, from an earlier work by Kadir Güngör and Ahmet Demirer, “Dry Friction and Wear of Graphite-Filled PTFE Composites using Taguchi Approach: TAGUCHI BASED DRY FRICTION & WEAR DETECTION OF GRAPHITE-FILLED PTFE” (2024) Journal of Scientific & Industrial Research (JSIR), 83(11), pp. 1161–1171. doi: Link to Dry Friction and Wear of Graphite-Filled PTFE Composites using Taguchi Approach: TAGUCHI BASED DRY FRICTION & WEAR DETECTION OF GRAPHITE-FILLED PTFELink to the cited article. The decision to retract has been informed by Link to COPE’s guidelines on retractionsCOPE’s guidelines on retractions and Link to Emerald’s publishing ethicsEmerald’s publishing ethics. Emerald’s editorial and originality policy guidelines make it clear that work submitted should be original, not infringe any existing copyright, or be currently under consideration for publication by any other journal or publication. The publisher of the journal sincerely apologizes to the readers.