An engineering verification test (EVT) is performed on first
engineering
Engineering is the practice of using natural science, mathematics, and the engineering design process to Problem solving#Engineering, solve problems within technology, increase efficiency and productivity, and improve Systems engineering, s ...
prototype
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, electronics, and Software prototyping, software programming. A prototype ...
s, to ensure that the basic unit performs to
design
A design is the concept or proposal for an object, process, or system. The word ''design'' refers to something that is or has been intentionally created by a thinking agent, and is sometimes used to refer to the inherent nature of something ...
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 (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 is the process of creating new Product (business), products for businesses to sell to their customers. It involves the generation and development of ideas through a systematic process that leads to the creation of innovative products ...
and performance problems are not detected until late in the
product development
New product development (NPD) or product development in business and engineering covers the complete process of launching a new product to the market. Product development also includes the renewal of an existing product and introducing a product ...
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, electronics, and software programming. A prototype is generally used to ...
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
Usability can be described as the capacity of a system to provide a condition for its users to perform the tasks safely, effectively, and efficiently while enjoying the experience. In software engineering, usability is the degree to which a softw ...
)
* Performance testing
* Climatic testing
* Reliability testing
* Environmental testing
*
Mechanical testing
Mechanical testing covers a wide range of tests, which can be divided broadly into two types:
# those that aim to determine a material's mechanical properties, independent of geometry.
# those that determine the response of a structure to a given ...
*
Mean Time Between Failure (MTBF) prediction
*
Conformance testing
Conformance testing 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 specification, technical standard, contract, or reg ...
* 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
fda.gov"Design Control Guidance For Medical Device Manufacturers", Section F: "Design Verification".
Quality control
Product testing