An engineering verification test (EVT) is performed on first
engineering
Engineering is the use of scientific method, scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad rang ...
prototypes, to ensure that the basic unit performs to
design
A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process or the result of that plan or specification in the form of a prototype, product, or process. The verb ''to design'' ...
goals and
specifications
A specification often refers to a set of documented requirements to be satisfied by a material, design, product, or service. A specification is often a type of technical standard.
There are different types of technical or engineering specificati ...
. Verification ensures that designs meets requirements and specification while validation ensures that created entity meets the user needs and objectives.
Tests
Tests may include:
*
Functional test (basic)
* Power measurement
* Signal quality test
*
Conformance test
*
Electromagnetic interference
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrost ...
(EMI) pre-scan
* Thermal and four-corner test
* Basic parametric measurements, specification verification
Importance
Identifying design problems and solving them as early in the design cycle as possible is a key to keeping projects on time and within budget. Too often,
product design
Product design as a verb is to create a new Product (business), product to be sold by a business to its customers. A very broad coefficient and effective generation and development of ideas through a process that leads to new products. Thus, it is ...
and performance problems are not detected until late in the
product development
In business and engineering, new product development (NPD) covers the complete process of bringing a new product to market, renewing an existing product or introducing a product in a new market. A central aspect of NPD is product design, along ...
cycle, when the product is ready to be shipped.
Prototyping
In the
prototyping
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design
A design is a plan or specification for the construction of an object o ...
stage, engineers create actual working samples of the product they plan to produce. Engineering verification testing (EVT) is used on prototypes to verify that the design meets pre-determined specifications and design goals. This valuable information is used to validate the design as is, or identify areas that need to be modified.
Design Verification Test
Design Verification Test (DVT) is an intensive testing program which is performed to deliver objective, comprehensive testing verifying all product specifications, interface standards,
Original Equipment Manufacturer (OEM) requirements, and diagnostic commands. It consists of the following areas of testing:
* Functional testing (including usability)
* Performance testing
* Climatic testing
* Reliability testing
* Environmental testing
* Mechanical testing
*
Mean Time Between Failure (MTBF) prediction
*
Conformance testing
Conformance testing — an element of conformity assessment, and also known as compliance testing, or type testing — is testing or other activities that determine whether a process, product, or service complies with the requirements of a specif ...
* Electromagnetic compatibility (
Electromagnetic Compatibility (EMC)) testing and certification
* Safety certification
Design refinement
After prototyping, the product is moved to the next phase of the design cycle:
design refinement. Engineers revise and improve the design to meet performance and design requirements and specifications.
References
{{Reflist
External links
* https://www.fda.gov/regulatory-information/search-fda-guidance-documents/design-control-guidance-medical-device-manufacturers, "Design Control Guidance For Medical Device Manufacturers", Section F: "Design Verification".
Quality control
Product testing