Concurrent Engineering Lecture 2.pptx Final document

Concurrent Engineering presentation will explore an interesting literature about PLCs and other programming languages

1. CONCURRENT ENGINEERING LECTURE TWO: CONCEPT DEVELOPMENT

2. Lecture Outline Quality Function Development Concept Generation Concept selection Group Questions

3. Quality Function Deployment QFD is a structured approach to translate customer needs into product or service design requirements, ensuring high-quality outcomes that meet customer expectations. Key components of QFD include: House of Quality (HOQ): A matrix tool that correlates customer needs with product design characteristics to prioritize design elements. Voice of the Customer (VOC): Gathers and analyzes customer feedback to identify key product requirements.

4. House of Quality

5. House of Quality Customer Needs (WHATs): List of customer requirements, identified through Voice of the Customer (VOC) analysis. Design Characteristics (HOWs): Product features or attributes that address customer needs. Relationship Matrix: Shows the correlation between customer needs and design characteristics. Importance Rating: Assigned weights to customer needs based on their priority. Competitive Assessment: Benchmarks competitors' performance against customer needs. Technical Correlations: Identifies relationships among design characteristics. Technical Benchmarking: Compares the company's current product against competitors. Target Values: Sets specific performance goals for each design characteristic.

6. Concept Generation Concept generation is the creative process of developing potential solutions to design problems based on identified customer needs and product requirements. Key approaches to concept generation include: Brainstorming: Encourages open, uncritical idea generation from diverse team members to explore a wide range of concepts. Mind Mapping: Visual technique that organizes related ideas around a central concept, stimulating connections and new associations. Prototyping: Developing physical models to visualize, test, and refine design ideas. Design Thinking: Human-centred approach that emphasizes empathy, ideation, and experimentation to create innovative solutions. Concept generation helps bridge the gap between customer needs and final product design, fostering creativity, collaboration, and innovation within the design process.

7. Concept selection Concept selection involves evaluating and choosing the most promising design concept from a set of generated ideas. Key steps and considerations include: Establish Selection Criteria: Define relevant factors for comparing concepts, such as performance, cost, manufacturability, and market potential. Weight Criteria: Assign relative importance values to each selection criterion based on project objectives and priorities. Evaluate Concepts: Rate each concept against the selection criteria to assess its potential. Compute Scores: Calculate an overall score for each concept by summing the product of criterion weights and concept ratings. Analyze Results: Review concept scores and sensitivity to selection criteria to guide decision-making . It involves concept screening and concept scoring.

8. Concept Screening Concept screening is an initial filtering process to eliminate unsuitable design concepts before investing significant resources in detailed evaluation. It helps focus on the most promising ideas for further development. Key aspects of concept screening include: Define Screening Criteria: Identify key factors that concepts must satisfy, such as feasibility, market potential, and alignment with project objectives. Set Thresholds: Establish minimum performance levels or "must-haves" for each screening criterion. Evaluate Concepts: Assess each concept against the screening criteria to determine if it meets the threshold requirements. Filter Concepts: Eliminate concepts that fail to meet one or more screening criteria.

9. Concept Scoring Concept scoring is a method of evaluating and ranking design concepts based on predetermined criteria. It involves assigning weights to each criterion and rating each concept to determine its overall score. Here's a step-by-step guide to concept scoring: Define Criteria: Identify key factors that influence the success of a design concept, such as performance, cost, manufacturability, and market appeal. Assign Weights: Determine the importance of each criterion relative to the others and assign weights accordingly (e.g., a scale of 1 to 5). Rate Concepts: Evaluate each concept against each criterion using a consistent rating scale (e.g., 1 to 5). Calculate Scores: Multiply each concept's rating by the weight of the corresponding criterion, then sum the results to obtain an overall score for each concept. Rank Concepts: Sort the concepts by their scores to prioritize them for further development.

10. Group exercise As a team of Zimbabwean engineers, you are tasked with designing a low-cost, efficient maize harvesting machine. Using brainstorming, mind mapping, and prototyping techniques, generate and evaluate a variety of innovative concepts before converging on the optimal solution . As a Zimbabwean start-up, you are asked to develop three potential designs for an innovative solar-powered cooking stove. Using selection criteria like cost, efficiency, durability, and user-friendliness, develop three concepts and evaluate each concept to determine the optimal solution for meeting customer needs and market potential . As a Zimbabwean engineering team, you are supposed to develop several concepts for a low-cost water filtration system. To narrow down the options, screen the concepts based on criteria like cost, efficiency, ease of use, and maintainability.