Integrated AHP-TRIZ innovation method for automotive door panel design

This research is intended to improve the ‘Theory of Inventive Problem Solving’ TRIZ methodology by integrating with the Multi Criteria Decision Making (MCDM) tool; Analytical Hierarchy Process (AHP). This integration works as a support tool to assist the TRIZ practitioners or design engineers. AHP is employed to rank ideas generated by TRIZ in order to select the most ideal idea further to next stages. This integration was analyzed and validated by a study case of door panel of a sedan car. Both front and rear door panels are covered in this study. A survey of interior’s problems and customer’s preferences had been conducted in order to identify the criteria and weights for AHP evaluation processes. Basically, there were 10 ideas triggered by TRIZ contradiction and principle approach. The ideas were refined and ranked through AHP’s Expert Choice software. Several ideas had been combined and finalized as one ideal improved design. Applying AHP into problem solving method of TRIZ results in avoiding cost waste and increasing the design efficiency during the product design and development processes

Integrated TRIZ-AHP support system for conceptual design

Amid the fierce rising competition in the market, accelerating the problem solving and decision making process have become major issues in product design especially in conceptual design stage. For years, Theory of Inventive Problem Solving (TRIZ) has been extensively applied in problem solving. In this paper, Analytical Hierarchy Process (AHP) was proposed to strengthen three major steps in TRIZ methodology namely as problem definition, root cause identification and solution generation. The integration was then structured in the form of computer-based system. The integration, application and software in AHP and TRIZ method have been discussed in this paper. This proposed support system not only provided evidence that TRIZ methodologies improved by the support of AHP and also aided the designers in early design phase such as concept, process and material selection

Integrating TRIZ and AHP: a MPV's utility compartment improvement design concepts

This study sets up a systematic product design model that assists decision makers or design engineers to improved current design through idea generation method of Theory of Inventive Problem Solving (TRIZ) and utilizing analytical hierarchy process (AHP) performing the selection of best generated idea. In addition, the proposed framework is analyzed and evaluated by a case study of utility compartment of MPV. There were 5 types of improved design triggered by TRIZ principles approach and ranked based on selected criteria by utilizing Expert Choice software. Employing the proposed integrated methods on new product development or product redesign may raise the concept design efficiency as well as avoiding the cost waste during the product design and development processes. In addition, this study also means to investigate the strengths of TRIZ and AHP integration

Problems evaluation for TRIZ method using AHP: case study on car's dashboard improvement design concepts

This study established a support tool framework for TRIZ practitioners to specify the problems statement stage in TRIZ method through utilizing the Multi Criteria Decision Method (MDCM) of Analytical Hierarchy Process (AHP). The proposed framework was analyzed and evaluated by a case study of car’s dashboard. From a list of problems and customer complaints gathered by survey, the problems were evaluated through AHP method and resulted only three major problems that should be highlighted for further steps. Results indicated that the improvement design generated by both methods could came out an appropriate new design effectively and avoided the cost waste during the product design and development processes

Development of conceptual design support system based on integrated Theory of Inventive Problem Solving (TRIZ) and Analytical Hierarchy Process (AHP)

After years of fierce rising competition in the market, conceptual design has become the most important stage in product design. In this stage, expediting the problem-solving and decision-making processes is a crucial issue. Hence, a systematic framework or set of methodologies that efficiently support the decision making on the solution ideas generated from problem solving tools is highly in demand. A computerized support system needed to assist human limitation in large data processing. This research develops a framework and system for concept generation using an integrated Theory of Inventive Problem Solving (TRIZ) and Analytical Hierarchy Process (AHP). The TRIZ contradiction matrix and 40 inventive principles solution tools are employed for idea generation, and AHP is used to weight the criteria of concept design. The weights applied to the criteria are standardised for any ensuing evaluation and selection task, such as problem prioritisation, idea scoring and alternative design selection. An initial study of a water bottle design illustrates the applicability and effectiveness of the integrated framework. The framework is then formulated in the computer-based Conceptual Design Support System (CDSS) to support the repetitive and time-consuming evaluation tasks in the framework. A pilot CDSS is developed focusing on car interior design. The criteria of the car interior design are analysed for the preparation of the pilot CDSS development. The glove compartment in the car interior is chosen as the pilot CDSS case study. The applicability of CDSS can be extended into a wider range of applications if the criteria of target design in CDSS is modified and developed specifically to a particular type of product design. Hence, CDSS is improved by adding two selected product design types, i.e., a consumer product and an eco-product. The concepts thus generated are assumed to be at a higher level of abstraction without detailed drawings or material information. In case study of glove compartment design, concept A of sliding type door and flexible partition inside scored the highest, 7.39 points. For the case study of in-house dustbin, Concept C scored the highest with 6.38 points and in the final sketch, the concept has a cap that can be used to compress the rubbish inside by stepping on it. In composite automotive clutch pedal case study, the final concept sketch was designed with ribbed structures and layering the pedal with fire-and water-resistant thin films. The score was 34.36% improved in terms of an eco-product evaluation when compared to the current product. In conclusion, this research provides an effective integrated framework and a computerised system to formulate concept generation and evaluation in the early phase of conceptual design