Design for Excellence (DFX) is a systematic approach for product and process engineers while designing a product where X represents targeted objectives or characteristics of product or process. DFX comes under the topic of DFSS which requires a cross-functional team approach with the involvement of stakeholders.
In order to stay successful in the current market companies need to meet customer expectations and continuous efforts should be there to understand these demands. Several aspects such as cost, quality, reliability, recyclability etc. should be considered while designing a product according to these consumer needs.
Types of Design for X (DFX)
Design for Manufacturing/Assembly (DFM & DFMA)
These terms can be consolidated together because it shares common objectives in DFX process. Design for Manufacturing (DFM) deals with steps for improving manufacturing process to make a good product with reduced manufacturing cost. Product design is optimized and streamlined for achieving this end goal. Some of the factors such as material, tooling, environment, testing, tolerances etc. are analysed in detail here.
Design for Cost and Design to Cost (DTC)
Design for cost and DTC consist of several life cycle cost controlling techniques when a company has a fixed design cost to meet customer expectations. Designing for cost works on engineering principles but DTC is more related to management requirements. DTC also consider value analysis which also known as Design to Value which quantifies values that can be delivered to the customer along with redesign and reworking cost. and after-the-fact-management, but only incidentally on the engineering process. Low cost cannot be managed into a product; it must be engineered into a product.
Design for Testing/Testability (DFT)
Testing is a major part in in the process to ensure that products have predetermined quality standards demanded by the customers. So, in this stage the team has to design steps that required for validating the product to ensure that it doesn’t have any defects and it is properly functioning.
Design for Maintainability (DFM)
Maintainability is the rate at which a product can be easily maintained and. In this stage, design team give attention downsizing the maintenance costs by considering 2 major attributes such as preventive maintenance and corrective maintenance.
Design for Robustness
Robustness can be defined as the ability of the system to reduce variations while delivering defined outputs. While performing design for robustness causes such as structure of the product and also the nature or environment where product has been exposed to.
Design for Supply Chain (DFSC)
Target here is to design a system with high supply chain efficiency, less inventory cost and less or zero waste. Error detection of the product should also be considered in design step.
Design for Safety
This is one of the important design aspects which every team has to be focused because of strict safety regulations and requirements. The system should be designed with occurrence of less illness, injuries, accidents or hazards with increased productivity. Also, savings should be there in usage of personal protective equipment (PPE).