The development of validation technique in variable amplitude loadings strain repetitive data collection

M. N. Baharin, Zulkifli Mohd Nopiah, Shahrum Abdullah, M. I. Khairir, A. Lennie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In any experiment, there is a need to verify the reliability of the collected data. One of the solutions is to measure the data repetitively. It will lead to measurement of inconsistency that exists in the data. Similar things also happen in variable amplitude (VA) loading strain data collection where the data also need to be measured repetitively in order the collected data is reliable. The main objective of this study is to validate the reliability of collected VA loading strain data. Two techniques will be used for identifying the similarity in the pattern for strain signal which was measured repetitively. The probability distribution function (PDF) and power spectral density (PSD) diagrams of the strain data were used as the main tool to construct profile plots for the case study data. Then, each profile plot will be compared to each other in order to identify any similarities that exist in the case study data. For the purpose of the study, a set of nonstationary VA loadings strain data that exhibits random behaviour was used. This random data was measured in the unit of microstrain on the lower suspension arm of a car. The data was repetitively measured for 60 seconds at the sampling rate of 500Hz, giving 30,000 discrete data points. The distribution of the collected data was analysed using the PDF and PSD. Based on the analysis, it was found that PSD can produce better results at identifying the similar features that exist in the profile plot compared to PDF.

Original languageEnglish
Title of host publicationKey Engineering Materials
Pages337-342
Number of pages6
Volume462-463
DOIs
Publication statusPublished - 2011
Event8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010 - Kuala Lumpur
Duration: 7 Jun 20109 Jun 2010

Publication series

NameKey Engineering Materials
Volume462-463
ISSN (Print)10139826

Other

Other8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010
CityKuala Lumpur
Period7/6/109/6/10

Fingerprint

Power spectral density
Probability distributions
Distribution functions
Suspensions
Railroad cars
Sampling
Experiments

Keywords

  • Power spectral density diagram
  • Probability density function
  • Reliability
  • Strain data
  • Variable amplitude loadings

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Baharin, M. N., Mohd Nopiah, Z., Abdullah, S., Khairir, M. I., & Lennie, A. (2011). The development of validation technique in variable amplitude loadings strain repetitive data collection. In Key Engineering Materials (Vol. 462-463, pp. 337-342). (Key Engineering Materials; Vol. 462-463). https://doi.org/10.4028/www.scientific.net/KEM.462-463.337

The development of validation technique in variable amplitude loadings strain repetitive data collection. / Baharin, M. N.; Mohd Nopiah, Zulkifli; Abdullah, Shahrum; Khairir, M. I.; Lennie, A.

Key Engineering Materials. Vol. 462-463 2011. p. 337-342 (Key Engineering Materials; Vol. 462-463).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Baharin, MN, Mohd Nopiah, Z, Abdullah, S, Khairir, MI & Lennie, A 2011, The development of validation technique in variable amplitude loadings strain repetitive data collection. in Key Engineering Materials. vol. 462-463, Key Engineering Materials, vol. 462-463, pp. 337-342, 8th International Conference on Fracture and Strength of Solids 2010, FEOFS2010, Kuala Lumpur, 7/6/10. https://doi.org/10.4028/www.scientific.net/KEM.462-463.337
Baharin MN, Mohd Nopiah Z, Abdullah S, Khairir MI, Lennie A. The development of validation technique in variable amplitude loadings strain repetitive data collection. In Key Engineering Materials. Vol. 462-463. 2011. p. 337-342. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.462-463.337
Baharin, M. N. ; Mohd Nopiah, Zulkifli ; Abdullah, Shahrum ; Khairir, M. I. ; Lennie, A. / The development of validation technique in variable amplitude loadings strain repetitive data collection. Key Engineering Materials. Vol. 462-463 2011. pp. 337-342 (Key Engineering Materials).
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