Engineering validation test: Difference between revisions

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{{Short description|Testing of prototypes for viability}}

{{Wikify|date=November 2009}}

{{For-multi|verification and validation in science and engineering most generally|Verification and validation|test validation|Test validity}}

An '''Engineering validation test''' (EVT) is performed on first [[engineering]] [[prototype]]s, to ensure that the basic unit performs to design goals and specifications.

An '''engineering verification test''' ('''EVT''') is performed on first [[engineering]] [[prototype]]s, to ensure that the basic unit performs to [[design]] goals and [[specifications]].<ref>{{Cite journal |date=2002-08-01 |title=Product news |url=https://doi.org/10.1007/BF02715446 |journal=Practical Failure Analysis |language=en |volume=2 |issue=4 |pages=23–25 |doi=10.1007/BF02715446 |s2cid=195269651 |issn=1864-1245|url-access=subscription }}</ref> Verification ensures that designs meets requirements and specification while validation ensures that created entity meets the user needs and objectives.<ref>{{Cite book |last1=Wang |first1=Der-Wai |last2=Hsu |first2=Yen |title=Cross-Cultural Design. Applications in Business, Communication, Health, Well-being, and Inclusiveness |chapter=A Study of Cross-Cultural Communication in the NPD: Applying Piaget's Theory to Multidisciplinary Communication in the Three Validation Stages |date=2022 |editor-last=Rau |editor-first=Pei-Luen Patrick |chapter-url=https://link.springer.com/chapter/10.1007/978-3-031-06050-2_14 |series=Lecture Notes in Computer Science |volume=13313 |language=en |___location=Cham |publisher=Springer International Publishing |pages=188–201 |doi=10.1007/978-3-031-06050-2_14 |isbn=978-3-031-06050-2}}</ref>

==Tests==

Tests may include:

* [[Functional test]] (basic)

* Power measurement

* Signal quality test

* [[Conformance test]]

* [[Electromagnetic interference]] (EMI) pre-scan

* Thermal & 4and four-corner Testtest

* 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 your projectprojects on time and within budget. Too often, [[product design]] and performance problems are not detected until late in the [[product development]] cycle —, when you'rethe gettingproduct is ready to shipbe your productshipped.<ref>{{Cite Thebook old|last1=Dong adage|first1=Jin holdsSong true|url=https://books.google.com/books?id=9_VqCQAAQBAJ&dq=Engineering+validation+design+flaws&pg=PA207 Its|title=Formal costsMethods aand pennySoftware toEngineering: make5th aInternational changeConference inon engineeringFormal Engineering Methods, aICFEM dime2003, inSingapore, productionNovember and5-7, a2003, dollarProceedings after|last2=Woodcock a|first2=Jim product|date=2003-11-06 is|publisher=Springer in|isbn=978-3-540-39893-6 the field.|language=en}}</ref>

==Prototyping==

In the [[Prototypingprototyping]] stage, engineers create actual working samples of the product they plan to produce. Engineering Verificationverification Testingtesting (EVT) <!-- see talk page --> 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 consistingwhich is performed to deliver objective, comprehensive testing verifying all product specifications, interface standards, [[original equipment manufacturer|Original Equipment Manufacturer (OEM)]] requirements, and diagnostic commands. It consists of fivethe following areas of testing:

* Functional Testingtesting (including [[Usability testing|usability]])

* Performance Testingtesting

* Functional Testing (including usability)

* Climatic Testingtesting

* Performance Testing

* Reliability Testingtesting

* Climatic Testing

* Environmental testtesting

* Reliability Testing

* [[Mechanical testtesting]]

* Environmental test

* [[Mean time between failures|Mean Time Between Failure (MTBF)]] prediction

* Mechanical test

* [[Conformance testing]]

* MTBF prediction

* Electromagnetic compatibility ([[electromagnetic compatibility|Electromagnetic Compatibility (EMC)]]) testing and certification

* Compliance and Regulatory Testing

* EMC test and certification

* Safety certification

==Design refinement==

After prototyping, the product is moved to the next phase of the design cycle: Design[[iterative Refinementdesign|design refinement]]. Engineers revise and improve the design to meet performance and design requirements and specifications. Design Verification Testing is performed to deliver objective, comprehensive testing verifying all product specifications, interface standards, OEM requirements, and diagnostic commands.

==References==

{{Reflist}}

== External links ==

* [https://web.archive.org/web/20190612175636/https://www.fda.gov/regulatory-information/search-fda-guidance-documents/design-control-guidance-medical-device-manufacturers fda.gov] "Design Control Guidance For Medical Device Manufacturers", Section F: "Design Verification".

[[Category:Quality control]]

[[Category:ProductionProduct and manufacturingtesting]]