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AutoSampler: Life Acceleration Test
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
2014 (English)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

FOSS wants to offer a reliable robust new generation of Infratec analytical instrument (called Prototype model) to its customers because reliability and robustness is a very important issue for FOSS reputation. Therefore a lifetime test is necessaryto be done on the new sample handling system to avoid any problem out in the field.The main objective of this thesis is to construct a robustand stablemechanical AutoSampler; thedeveloped”AutoSampler”will subject the new generation of Infratec analytical instrument toaLife Acceleration test(LAT). The test is to highlight; the weak parts of the Prototype model, designmargin, robustness, reliability leveland to find potential weaknesses in the design at an early stage in the development phase,where changes can be done at low costs. Failure causes will be inspected, modificationimplemented and tested again. The LATtobe performed on at least threePrototype modelsfor 700,000 cycles which correspond to that the instrument is being used during 7 years. If thenew Prototypemodelfulfil the requested time, that will be great otherwisewe will learn something newand FOSS will come out with a better developed construction.This work resulted in a robust mechanical construction performing Life Acceleration Test on the Prototype model of a new generation of Infratecwhere three concepts of LAT mechanism were suggested: Elevator, Conveyors and Screw concept. A table of comparison concerning price, robustness cons and pros was made. Out of which the Screw concept was approved. The concept was then developed to a finished mechanism that was tested to assure its stabilityand reliability in performance. Technically AutoSampler fulfilled all the needed requirements. Results showed that AutoSampler is a good robust solution to perform LAT on Prototype model. LAT started on Prototype model which resulted in different findings and development. Even though many errors appeared at the beginning of the test the overall functionality of the Prototype was satisfactory. The analyses results were stable within the normal designed range. This report coversthe LAT test done from the 17thof March to 30thof April, 2014. But today June 1stand after the last modifications were implemented the AutoSampler did over 20000 cycle with few interruption which shows a satisfactory results in Prototype performance. Thanks to the detected failures thatresulted to a better robust design

Place, publisher, year, edition, pages
2014.
Keyword [en]
autosampler
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hh:diva-25678OAI: oai:DiVA.org:hh-25678DiVA: diva2:725682
Subject / course
Mechatronics
Supervisors
Examiners
Available from: 2014-06-30 Created: 2014-06-16 Last updated: 2014-10-22Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf