Engineering validation test: Difference between revisions

Revision as of 18:49, 9 February 2011

Latest revision as of 20:44, 29 May 2025

(36 intermediate revisions by 27 users not shown)

Line 1:

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

{{unreferenced|date=February 2011}}

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

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>

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

==Tests==

Tests may include:

* [[Functional test]] (basic)

* Power measurement

* Signal quality test

* [[Conformance test]]

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

* Thermal and 4 four-corner test

* Basic parametric measurements, specification verification

==Importance==

Identifying design problems, and solving them as early in the design cycle as possible, is thea key to keeping projects on time and within budget. Too often, [[product design]] and performance problems are not detected until late in the [[product development]] cycle —, when the product is ready to be shipped.<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 It|title=Formal costsMethods aand [[PennySoftware (UnitedEngineering: States5th coin)|penny]]International toConference makeon aFormal changeEngineering in engineeringMethods, aICFEM [[Dime2003, (UnitedSingapore, StatesNovember coin)|dime]]5-7, in2003, productionProceedings and|last2=Woodcock a|first2=Jim [[United|date=2003-11-06 States|publisher=Springer dollar|dollar]]isbn=978-3-540-39893-6 after a product is in the field.|language=en}}</ref>

==Prototyping==

In the [[prototyping]] stage, engineers create actual working samples of the product they plan to produce. Engineering verification testing (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 verificationVerification testTest==

Design verificationVerification testTest (DVT) is an intensive testing program which 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 five <!-- the list shows ten -->following areas of testing:

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

* Performance testing

* Climatic testing

* Reliability testing

* Environmental testtesting

* [[Mechanical testtesting]]

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

* Compliance and regulatory[[Conformance testing]]

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

* EMC test and certification

* Safety certification

==Design refinement==

After prototyping, the product is moved to the next phase of the design cycle: [[iterative design|design refinement]]. Engineers revise and improve the design to meet performance and design requirements and specifications.

==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]]