Quality Function Deployment is a structured methodology and set of techniques used for product discovery and development. It helps product teams to translate https://www.globalcloudteam.com/ customer requirements into product specifications. The customer requirements are simply fed into the rows and the design requirements fed into the columns.

what is quality function deployment

Requirements the customer might not express would influence the design process. These requirements might include expectations so basic they might not have even entered the customer’s requirements-listing thought process. Because this is such an obvious requirement, a watertight hull would probably not be listed as a customer requirement, but the requirement exists. Another group of requirements the customer might list include such things as government regulations, and perhaps other externally imposed requirements. Based on product and component specifications, manufacturing and assembly processes are designed. QFD begins with the business implementing a Voice of the Customer methodology to describe customer needs in the context of product specifications.

What Is Quality Function Deployment (QFD) and Why Do We Use It?

It will also shed some light on the relative importance of each parameter in the design process. For example, it is always better we have low weight, high engine power and life, low cost of production, high dimensions, and quick acceleration. The next thing you need to do is figure out the engineering parameters that you need in order to design the car. The next thing we do is assume the importance of each of these car characteristics, like what is important according to the customers.

what is quality function deployment

The engineering requirements are captured in the columns of the matrix. Removing debris from air flow, for example, is one of the main functions of a hair dryer. The last row of the matrix captures the “how much” values for the functions. The function removing debris from air flow, for example, has a corresponding “how much” cell where it is noted that the screen apertures have to be 1mm maximum.

Shortcomings of Quality Function Deployment

They also compared how their competitors were doing with respect to the same requirements. This information provides the input to engineering, who will produce the product’s technical specs. Manufacturing has to design the process to actually produce the product. Quality now gets involved to be sure that the product meets all specs and expectations. Marketing reengages to communicate the new product’s features to your customer. Quality Function Deployment is a framework that enables the product team to use information about customer needs to determine product design parameters, and ultimately develop products that provide value to users.

By the use of QFD the developed mobile services can best meet customers’ requirements or even exceed their expectations. At the end of this paper some benefits as well as further improvements regarding QFD approach are discussed and concluded. The purpose of Quality Function Deployment is not to replace an organization’s existing design process but rather support and improve an organization’s design process. QFD methodology is a systemic, proven means of embedding the Voice of the Customer into both the design and production process.

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Translate the outputs of the product planning phase into individual part details that define part characteristics. Allows you to compare the design parameters with competitive products. Tools used in Quality Function Deployment are very well structured for capturing decisions made and lessons learned during development of product.

what is quality function deployment

It helps to identify the process which meets the part requirements in the best possible manner. Technical requirements move to the left side of the house of quality matrix, and a new set of control factors are put on top. The control factors for product development are usually critical parts or product specs. The voice of the customer was already loud and clear, and car companies were aware of the problem, but were consistently failing to improve their designs. The reason for this was that they were following a ‘traditional’ engineering approach.

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QFD is used to translate the ‘Voice of the Customer’ into the specific technical characteristics and requirements that the design must have to succeed in the market. Although this experience was related to the use of QFD, it also holds for similar methods. For VA it is already difficult to imagine how at all this method could apply to materials, as there are no parts in the material, while the method is based on the assumption that there are.

  • One of the fundamental principles of QFD is that every decision and selection made in the whole product development cycle can be referred back to the customer requirements.
  • Use surveys, customer meetings, or focus groups/clinics to obtain feedback.
  • Quality Function Deployment enables teams to build products that deliver value to customers.
  • Most consumers make their selection based upon a general perception of quality or value.
  • It was later adopted by other companies including Toyota and its supply chain.

At the bottom of the matrix, the column is summed, which allows for the system characteristics to be weighted according to the stakeholder characteristics. System parameters and stakeholder characteristics with weak correlations potentially indicate missing information, while matrices with “too many correlations” indicate that the stakeholder needs may need to be refined. Attempts to address corrosion then became a “sticky plaster” approach, as an afterthought late in the development cycle.


After completing the surveys and aggregating the data , it’s boiled down into the Voice of the Customer. These customer requirements, requests, demands, and preferences are framed as specific items and ideally ranked in importance. These are then listed on the left-hand side of the House of Quality matrix and represent what customers want the product to do.

Then, your team can determine which controls are the most useful and create quality targets. Critical parts or product specs are on the left side of the house of quality matrix, and the control factors are steps to build the product specs. You should discover which process will have the best impact on creating the product specs. Next, identify the relationship between the VOC and technical specifications to pinpoint what features to build next to satisfy customer needs.

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The more preferable method of extracting the weighing factor is giving the potential customer 100 points to distribute amongst the requirement (fixed-sum method). This will ensure that https://www.globalcloudteam.com/glossary/quality-function-deployment/ the more important requirements are assigned higher points. Whereas, in the case of the common 10-point system, the average weighing factor given by the customer is 8,9 or 10.

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