<p>The&nbsp;supplier&nbsp;design&nbsp;process&nbsp;depends&nbsp;on&nbsp;the&nbsp;communication&nbsp;of&nbsp;design&nbsp;requirements&nbsp;from&nbsp;original&nbsp;equipment&nbsp;manufacturers.&nbsp;While&nbsp;requirements&nbsp;are&nbsp;supposed&nbsp;to&nbsp;be&nbsp;clear&nbsp;and&nbsp;well-defined,&nbsp;they&nbsp;are&nbsp;subject&nbsp;to&nbsp;changes&nbsp;during&nbsp;both&nbsp;the&nbsp;design&nbsp;and&nbsp;in-service&nbsp;phases.&nbsp;Additive&nbsp;manufacturing&nbsp;provides&nbsp;flexibility&nbsp;by&nbsp;increasing&nbsp;the&nbsp;number&nbsp;of&nbsp;redesign&nbsp;by&nbsp;remanufacturing&nbsp;options&nbsp;available&nbsp;to&nbsp;the&nbsp;designer&nbsp;when&nbsp;changes&nbsp;are&nbsp;necessary.&nbsp;Another&nbsp;strategy&nbsp;for&nbsp;managing&nbsp;change&nbsp;is&nbsp;by&nbsp;building&nbsp;design&nbsp;margins&nbsp;into&nbsp;the&nbsp;component&nbsp;such&nbsp;that&nbsp;it&nbsp;incorporates&nbsp;a&nbsp;buffer&nbsp;against&nbsp;change.&nbsp;In&nbsp;such&nbsp;robust&nbsp;designs,&nbsp;buffer&nbsp;may&nbsp;turn&nbsp;to&nbsp;excess&nbsp;if&nbsp;requirements&nbsp;are&nbsp;relaxed&nbsp;resulting&nbsp;in&nbsp;overdesign&nbsp;and&nbsp;increased&nbsp;lifecycle&nbsp;and&nbsp;development&nbsp;costs.&nbsp;A&nbsp;good&nbsp;design&nbsp;strategy&nbsp;is&nbsp;one&nbsp;that&nbsp;minimizes&nbsp;excess&nbsp;while&nbsp;accommodating&nbsp;a&nbsp;range&nbsp;of&nbsp;current&nbsp;and&nbsp;future&nbsp;requirements&nbsp;through&nbsp;design&nbsp;flexibility.&nbsp;A&nbsp;methodology&nbsp;for&nbsp;quantifying&nbsp;excess&nbsp;in&nbsp;a&nbsp;multi-dimensional&nbsp;parameter&nbsp;space&nbsp;is&nbsp;provided&nbsp;in&nbsp;this&nbsp;paper.&nbsp;Excess&nbsp;throughout&nbsp;so-called&nbsp;design&nbsp;epochs&nbsp;is&nbsp;minimized&nbsp;subject&nbsp;to&nbsp;reliability&nbsp;constraints&nbsp;using&nbsp;optimization&nbsp;to&nbsp;obtain&nbsp;a&nbsp;design&nbsp;arc&nbsp;representing&nbsp;the&nbsp;chain&nbsp;of&nbsp;decisions&nbsp;taken&nbsp;throughout&nbsp;the&nbsp;product's&nbsp;lifecycle&nbsp;or&nbsp;development&nbsp;process&nbsp;to&nbsp;arrive&nbsp;at&nbsp;the&nbsp;final&nbsp;design.&nbsp;The&nbsp;developed&nbsp;methodology&nbsp;is&nbsp;demonstrated&nbsp;by&nbsp;means&nbsp;of&nbsp;a&nbsp;turbine&nbsp;rear&nbsp;structure&nbsp;design&nbsp;problem&nbsp;where&nbsp;changes&nbsp;in&nbsp;the&nbsp;temperature&nbsp;loads&nbsp;are&nbsp;met&nbsp;by&nbsp;depositing&nbsp;different&nbsp;types&nbsp;of&nbsp;stiffeners&nbsp;on&nbsp;the&nbsp;outer&nbsp;casing.&nbsp;The&nbsp;set-based&nbsp;results&nbsp;of&nbsp;the&nbsp;case&nbsp;study&nbsp;are&nbsp;visualized&nbsp;in&nbsp;a&nbsp;tradespace&nbsp;for&nbsp;comparison&nbsp;with&nbsp;sets&nbsp;of&nbsp;flexible&nbsp;and&nbsp;robust&nbsp;design&nbsp;arcs.&nbsp;Results&nbsp;show&nbsp;that&nbsp;the&nbsp;optimized&nbsp;set&nbsp;of&nbsp;design&nbsp;arcs&nbsp;balances&nbsp;flexibility&nbsp;and&nbsp;robustness&nbsp;in&nbsp;a&nbsp;cost-effective&nbsp;manner.</p>

Optimal Allocation of Design Margins in Additive Remanufacturing

Paper Proceedings: https://asmedigitalcollection.asme.org/IDETC-CIE/IDETC-CIE2021/volume/85369

ASME 2021 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE2021)

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