2018/5/16 Quality Function Deployment (QFD) 圈上声文大学 Case study-an example 国上活大学 OFD is a tool that can help improve product development by Organize a design team-make sure everyone is committed and forusing attention and re ces on efforts that will ensure the can contribute to the project greatest results in terms of meeting customer requirements. 。 Define customer expectations-"What"list Process -Identifying and prioritizing customer requirements and expectations -Identify design features that will ensure greatest results -Maybe used in several iterations -More robust design process .Brain storming if noreal -Key decisions are documented in the process and write dow What Cluster all expectations into Refine the list by carrying out market surveys Categorize the importance rrcn ein o Case study -an example 圈上活大坐 Case study an example 园上活道大整 Identify how these requirements can be satisfied-produce the Develop the first relationship matrix "How"list … Establish the relationships between .Design solutions to meet the ectations and design What expectatons potentially What nts by asking Based on technical 8 if we meet this knowledge Payloadqurment Consult domain expert if not Hih Thrust 8 expectations improve? ing Cest sure 0* ing Cou 443 Rank the relationships Refine the lis Reality check,typically by ntity more detaile Easy to Troubleshoat domain expert Ream for Dorvelopmnt Wtsien Use ef hith altitude airports Use of high albude airports Case study -an example 圈上清大坐 Case study-an example 园上海发大坐 Prioritize the requirements-how much? Further work Establish target values for requirements -Maximizing or minimizing the requirements? Establish the roof matrix 。More iterations. Multiply the strength of each requirement with the priority number (1 to 5)for What each corresponding Add the results and enter 8 the sum for each requirements at the bottom 1o M of the ma联 4431 What 813站3约3药680117 rslty-Dr.V(enbin Song 22018/5/16 2 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Quality Function Deployment (QFD) • QFD is a tool that can help improve product development by focusing attention and resources on efforts that will ensure the greatest results in terms of meeting customer requirements. • Process – Identifying and prioritizing customer requirements and expectations – Identify design features that will ensure greatest results – Maybe used in several iterations – More robust design process – Key decisions are documented in the process © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Case study – an example • Organize a design team – make sure everyone is committed and can contribute to the project • Define customer expectations – “What” list • Brain storming if no real customers are involved • State clearly and write down each one • Cluster all expectations into categories • Refine the list by carrying out market surveys • Categorize the importance What Customer importance Thrust Total Maint cost Mission Fuel Burn Cycle life limit Weight LRU Time removal Aerodynamic Drag Meeting Range Requirement 5⊕ ○ ⊕ Payload requirement 4 ⊕ ⊕ High Thrust 3 ⊕ Low Operating Cost 4 ⊙ ⊕ ⊕ High Reliability 4 Easy to Maintain 3 Easy to Troubleshoot 1 Room for Development Version 3 ⊕ Use of high altitude airports 4⊕ ⊕ How Relations ⊕ Strong = 9 ⊙ Medium = 3 ○ Weak=1 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Case study – an example • Identify how these requirements can be satisfied – produce the “How” list • Design solutions to meet the expectations potentially • Based on technical knowledge • Consult domain expert if not sure • Refine the list • Identity more detailed relations (an equations? Software module?) What Customer importance Thrust Total Maint cost Mission Fuel Burn Cycle life limit Weight LRU Time removal Aerodynamic Drag Meeting Range Requirement 5⊕ ○ ⊕ Payload requirement 4 ⊕ ⊕ High Thrust 3 ⊕ Low Operating Cost 4 ⊙ ⊕ ⊕ High Reliability 4 Easy to Maintain 3 Easy to Troubleshoot 1 Room for Development Version 3 ⊕ Use of high altitude airports 4⊕ ⊕ How Relations ⊕ Strong = 9 ⊙ Medium = 3 ○ Weak=1 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Case study – an example • Develop the first relationship matrix • Establish the relationships between customer expectations and design requirements by asking “if we meet this requirements, would expectations improve?” • Rank the relationships • Reality check, typically by domain expert What Customer importance Thrust Total Maint cost Mission Fuel Burn Cycle life limit Weight LRU Time removal Aerodynamic Drag Meeting Range Requirement 5⊕ ○ ⊕ Payload requirement 4 ⊕ ⊕ High Thrust 3 ⊕ Low Operating Cost 4 ⊙ ⊕ ⊕ High Reliability 4 Easy to Maintain 3 Easy to Troubleshoot 1 Room for Development Version 3 ⊕ Use of high altitude airports 4⊕ ⊕ How Relations ⊕ Strong = 9 ⊙ Medium = 3 ○ Weak=1 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Case study – an example • Prioritize the requirements – how much? • Multiply the strength of each requirement with the priority number (1 to 5) for each corresponding customer expectations • Add the results and enter the sum for each requirements at the bottom of the matrix What Customer importance Thrust Total Maint cost Mission Fuel Burn Cycle life limit Weight LRU Time removal Aerodynamic Drag Meeting Range Requirement 5⊕ ○ ⊕ Payload requirement 4 ⊕ ⊕ High Thrust 3 ⊕ Low Operating Cost 4 ⊙ ⊕ ⊕ High Reliability 4 Easy to Maintain 3 Easy to Troubleshoot 1 Room for Development Version 3 ⊕ Use of high altitude airports 4⊕ ⊕ How Relations ⊕ Strong = 9 ⊙ Medium = 3 ○ Weak=1 81 36 39 36 68 0 117 © Shanghai Jiao Tong University – Dr. Wenbin Song School of Aeronautics and Astronautics Case study – an example • Further work – Establish target values for requirements – Maximizing or minimizing the requirements? – Establish the roof matrix • More iterations … What Customer importance Thrust Total Maint cost Mission Fuel Burn Cycle life limit Weight LRU Time removal Aerodynamic Drag