Autors: Sabev, S. T., Chukalov, K. S.
Title: Design and Manufactoring of a Laboratory Stand for Testing Accelerated Tensile Creep of Plastics According to ASTM D6992
Keywords: creep, design equipment, lab equipment, plastic tests, stepped isothermal method, tensile creep test, test methods

Abstract: The article discusses stages of design and manufacturing of a laboratory stand for accelerated tensile creep of plastics according to ASTM D6992. All components necessary for accurate operation of the laboratory stand will be examined: jaws, deadweight system,loading weights, linear strain measurement system and control, test temperature control and monitoring, test data storage and management. The aim of the article is to create flexible systems that allow the stand to be used for other similar test standards and materials. The main task in the design and manufacturing of the stand is to create reliable equipment with a high accuracy degree, automated loading of a control program, as well asability to store a large volume of data for the purpose of creating a database and comparing test results. The mathematical model for calculating equivalent years is directly integrated for easier processing of experimental results. The stand is designed and manufactured for testing 2 samples simultaneously, which facilitates comparison of data from different polymer blends.The stand is calibrated according to its three main quantities - linear strain, temperature and deadweights.The calibration results are presented to assess accuracy of the laboratory stand systems. The stand fully meets the requirements defined according to ASTM D6992. The accuracy of the calibrated quantities allows precise calculations of accelerated creep data on a wide range of materials. Design and manufacturing steps may also be used with other standardized and non-standardized creep tensile testing methods of plastics, as well as other laboratory equipment needs with similar systems and goals.

References

  1. Sourangshu, “Analysis of Creep Deformation,” 2024. [Online]. Available: https://doi.org/10.20944/preprints202412.1894.v1. [Accessed: January 13, 2025].
  2. Z. Yang, Q. Meng, Z. Fang and X. Zhang, “Supply Chain Elastic Strain”, Mathematics, vol. 12, p. 1788, 2024. [Online]. Available: https://doi.org/10.3390/math12121788. [Accessed: January 13, 2025].
  3. Z. Wang, Y. Li, S. Yasin, C. Zheng, P. Hu, L. Zhang and J. Shi, “Preparation and Properties of the Low-Cost Heat-Resistant Rubber Material for Trenchless Rehabilitation of Thermal Pipelines,” 2024. [Online]. Available: https://doi.org/10.1115/PVP2024-123175. [Accessed: January 13, 2025].
  4. V. Dacol and E. Caetano, “Modelling the Three-Stage of Creep,” 2022. [Online]. Available: https://doi.org/10.1007/978-3-030-76465-4_7. [Accessed: January 13, 2025].
  5. T. Hanes, R. Stephens, J. Siefert and I. Perrin, “Creep Crack Growth on High and Low Creep Ductility Grade 91 Steel,” pp. 316-327, 2024. [Online]. Available: https://doi.org/10.31399/asm.cp.am-epri-2024p0316. [Accessed: January 13, 2025].
  6. R. Sandström, “Basic Analytical Modeling of Creep Strain Curves”, Materials, vol. 16, p. 3542, 2023. [Online]. Available: https://doi.org/10.3390/ma16093542. [Accessed: January 10, 2025].
  7. A. Iskakbayev, B. Teltayev, Y. Aitbayev and A. Zhaisanbayev, “Accelerated Creep of Asphalt Concrete at Medium Temperatures”, Applied Sciences, vol. 14, p. 9393, 2024. [Online]. Available: https://doi.org/10.3390/app14209393. [Accessed: January 10, 2025].
  8. L. Su, S. Wu, G. Fu, W. Zhu, X. Zhang and B. Liang, “Creep characterisation and microstructural analysis of municipal solid waste incineration fly ash geopolymer backfill”, Scientific Reports, vol. 14, 2024. [Online]. Available: https://doi.org/10.1038/s41598-024-81426-7. [Accessed: January 10, 2025].
  9. N. Lynch-Aird, J. Woodhouse and C. Barlow, “Plastic Creep Constraint in Nylon Instrument Strings”, Materials, vol. 18, p. 223, 2025. [Online]. Available: https://doi.org/10.3390/ma18020223. [Accessed: January 10, 2025].
  10. W. Liu and S. Zhang, “Accelerated creep model based on the law of energy conservation and analysis of creep parameters”, Mechanics of Time-Dependent Materials, vol. 28, 2023. [Online]. Available: https://doi.org/10.1007/s11043-023-09628-6. [Accessed: January 10, 2025].
  11. M. A. Hossain, R. Mach, J. Pellicotte and C. Stewart, “Calibration of CDM-Based Creep Constitutive Model Using Accelerated Creep Test (ACT) Data,” 2020. [Online]. Available: https://doi.org/10.1115/GT2020-16017. [Accessed: January 10, 2025].
  12. S. Deng, “The Application of PLC in Industry Fields”, Highlights in Science, Engineering and Technology, vol. 114, pp. 168-172, 2024. [Online]. Available: https://doi.org/10.54097/28d22249. [Accessed: January 10, 2025].
  13. H. Liu, “Optimization and performance improvement of distributed data storage in hybrid storage systems”, World Journal of Advanced Engineering Technology and Sciences, vol. 13, pp. 459-467, 2024. [Online]. Available: https://doi.org/10.30574/wjaets.2024.13.1.0443. [Accessed: January 10, 2025].
  14. S. Cestari, P. Rodrigues, A. Ribeiro, C. Castro, V. Cruz, A. Torres, N. Ramos and A. Machado, “Compatibilizer Efficiency in Enhancing Marine Plastic Waste Valorization Through Simulated Recycled Plastic Blends,” *Polymers*, vol. 16, p. 3441, 2024. [Online]. Available: https://doi.org/10.3390/polym16233441. [Accessed: January 10, 2025].
  15. H. Jiang, “Overview and development of PID control”, Applied and Computational Engineering, vol. 66, pp. 187-191, 2024. [Online]. Available: https://doi.org/10.54254/2755-2721/66/20240946. [Accessed: January 10, 2025].
  16. J. Militky, D. Křemenáková and M. Venkataraman, “Calibration,” 2024. [Online]. Available: https://doi.org/10.1007/978-981-97-6607-9_7. [Accessed: January 10, 2025].

Issue

Environment Technology Resources - Proceedings of the 16th International Scientific and Practical Conference, vol. 4, pp. 357-361, 2025, Albania, https://doi.org/10.17770/etr2025vol4.8408

Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus