A Spreadsheet Implementation of QFD and Systems Engineering Approaches to Support Concurrent Engineering

Doukas, Louis; Pollock, Graham; Jeyaratnam, C.

doi:10.1002/j.2334-5837.1997.tb02214.x

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…27 AHP is proposed to bridge the gap between customer requirements and product manufacturer requirements, and it has been successfully used to visualize and clarify fuzzy user requirements for designers. 28 A framework combining AHP and TOPSIS is proposed to help designers identify CRs with design features and evaluate the final design scheme. 29 AHP is also applied to identify criteria weights, particularly as a suitable alternative to weighting customer requirements.…”

Section: Literature Backgroundmentioning

confidence: 99%

Modification and development of product concept design based on the product customers life environmental and social habits backgrounds’ diversity requirements

Jamea

Jing

Peng

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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Product customers often have varying preferences because they have different environmental and social habits backgrounds’ requirements “customer diversity requirements.” Even for a particular product used in specific place, the requirements of product stakeholders are often differed. It is a challenge to adapt diversity requirements to concepts design of products to satisfying different customers. To address the customer diversity requirements issue, after the analysis of customers information is completed, customers are classified according to their diversity. Then, customer requirements (CRs) and engineering specifications (ESs) that satisfy the CRs are determined. The priorities of CRs are calculated with analytical hierarchy process (AHP) involving a pairwise comparison matrix in the first step and fix-sum method in the second step. Quality function deployment (QFD) relation matrix is utilized to form the relationships intensities of CRs and ESs. ESs satisfaction degree values obtained concerning computation of CRs priorities calculated via AHP, while ESs target degree values obtained concerning computation of CRs priorities calculated via fix-sum method into QFD relation matrix. ESs satisfaction degree compared with ESs targets degree to measure the satisfaction for each customer target individually. The decision on whether the concept design needs further development or modification is made based on the comparison results. A case study of the application of this approach is presented to illustrate the possibilities of the technique in developing or modifying concept design according to customers’ life environmental and social habits background “diversity requirements.” The case proved that technique can adapt products to different environments and that products used by existing customers can be used for new customers or markets (product globalization) instead of being confined to one location. Moreover, the approach is very useful in clarifying the objectives expected by customers for specifying the development or modification of a product concept.

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Section: Literature Backgroundmentioning

confidence: 99%

Modification and development of product concept design based on the product customers life environmental and social habits backgrounds’ diversity requirements

Jamea

Jing

Peng

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

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“…A time-proven method for quickly converting requirements into a design is QFD (2) . The system requirements had been derived and related to performance requirements and constraints.…”

Section: Quality Function Deploymentmentioning

confidence: 99%

Using system engineering on an aircraft improvement project

Hsu

2006

Aeronaut. j.

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The C-17 is the mainstay in airlift in this new century. The incorporation of airdrop capability improvements was critically important. From defining requirements, engineering design, fabrication, assembly, flight test and retrofit to the field aircraft would have to be completed by the year of 2000. This presented a challenge to the integrated product team (IPT) organisations to achieve first-time quality under an accelerated schedule. Airdrop capability improvement was one of a few performance improvement projects to apply the complete systems engineering process. Development of team members understanding of systems engineering applications was necessary and added additional challenges to the systems engineering implementation. If the systems engineering process was not well executed by the entire team, the outcome would be viewed as a worthless activity.In summary, the challenges were: • A short time span of project design life cycle.• A first-time break-through implementation of full spectrum of systems engineering. • Team members learning systems engineering on the job during design phase. • Progressively understanding the customer requirements during design phase. REQUIREMENTSA timesaving technique to meet the accelerated schedule was the employment of a matrix for recording both requirements and verification methods. The requirements were allocated to the corresponding functions. The matrix is called requirements allocation sheet (RAS). ABSTRACTA complete system engineering process is applied to a pilot project that will determine the initial deployment of the system engineering process for future projects. It was a challenge to complete the entire systems engineering process to include project team utilisation of system engineering tools in such a short time span. Therefore, systems engineering products had to be useful and productive to the project. The system requirements definition, quality function deployment (QFD) evaluation, trade study, risk identification and risk mitigation processes were completed in a timely manner and assisted in the system eequirements, system design and preliminary design reviews successfully.

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“…In this work, a Build-in reliability widely-used method, analytic hierarchy process (AHP), is used for the ranking of customers' needs. Doukas et al (1997) have successfully used AHP to close the gap between the user's implied requirements and the producer's understanding of their importance. Armacost et al (1994) also used the AHP to develop and prioritize customer requirements for an application of QFD to the manufacture of an exterior structural wall panel.…”

Section: Ranking Of Vocsmentioning

confidence: 99%

Customer‐focused build‐in reliability: a case study

Tan

2003

International Journal of Quality &Amp; Reliability Management

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Build-in reliability (BIR) is becoming an essential requirement for product development today. However, the task of BIR can be resource-intensive since root causes identification is necessary. If a product is complex, the number of possible failure modes can be great, rendering BIR too large to be practical. In this work, an objective methodology for BIR is developed so that the task of BIR is customer focus, thus reducing the scope of BIR and maximizing its effectiveness. This is achieved through combining the failure mode and effect analysis (FMEA) with quality function deployment (QFD). The method is applied to an actual product in an actual industry, and with this method the FMEA becomes customer-focused, and hence the prioritization of the corrective actions to all failure modes can be done objectively with customer focus. Therefore, limited resources can be effectively used to maximize customers' satisfaction.

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A Spreadsheet Implementation of QFD and Systems Engineering Approaches to Support Concurrent Engineering

Cited by 4 publications

References 2 publications

Modification and development of product concept design based on the product customers life environmental and social habits backgrounds’ diversity requirements

Modification and development of product concept design based on the product customers life environmental and social habits backgrounds’ diversity requirements

Using system engineering on an aircraft improvement project

Customer‐focused build‐in reliability: a case study

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