Impression Creep Tests as Index Creep Testing Technique in Rock Mechanics and Rock Engineering.
Saved in:
| Title: | Impression Creep Tests as Index Creep Testing Technique in Rock Mechanics and Rock Engineering. |
|---|---|
| Authors: | Aydan, Ö.1 (AUTHOR) aydan@tec.u-ryukyu.ac.jp, Ito, T.1 (AUTHOR), Özcan, N. T.2 (AUTHOR), Özkan, İ.3 (AUTHOR), Rassouli, F.4 (AUTHOR) |
| Source: | Rock Mechanics & Rock Engineering. Jun2026, Vol. 59 Issue 6, p5873-5898. 26p. |
| Subject Terms: | *Creep testing, *Rock mechanics, *Empirical research, *Creep (Materials), *Stress measurement (Mechanics), *Rock deformation |
| Abstract: | A new testing technique is developed as an index creep device for evaluating time-dependent responses of rocks. Rock samples from Çankırı, Tuzköy in Nevşehir and Kağızman in Kars Provinces of Türkiye and Oya tuff from Tochigi Prefecture in Japan with well-studied time-dependent properties are selected for index creep tests. The impression creep devices developed are capable of applying tip pressure up to 433 MPa for an indenter of 3 mm in diameter for index creep testing technique. Experimental results obtained from impression creep tests are compared with those from conventional creep tests and the suitability of impression creep tests as an index creep test is explored. The most critical issue in creep tests is the determination of stress level. This issue is investigated through experimental, theoretical and numerical methods. It is proposed that the short-term impression test can be utilized for determination of the stress level in impression creep tests. The experimental results clearly demonstrated that both conventional creep and index creep tests are quite comparable and similar type responses are observed and it is concluded that the impression creep technique can be utilized as an index creep test. Highlights: In this paper, an impression creep testing device is developed as an index creep technique for evaluating time-dependent responses of rocks. Theoretical and numerical studies performed for how to establish interrelations for strain and stress in impression tests and conventional tests. Creep characteristics from impression creep tests on rocks are compared with those from conventional creep tests on the same rocks and good correlations are obtained. The experimental results could be useful for researchers dealing with the estimation of time dependent properties of rocks, rapidly. There is a high possibility for the utilization of the impression creep as an index creep test in the field of rock mechanics and rock engineering. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | A new testing technique is developed as an index creep device for evaluating time-dependent responses of rocks. Rock samples from Çankırı, Tuzköy in Nevşehir and Kağızman in Kars Provinces of Türkiye and Oya tuff from Tochigi Prefecture in Japan with well-studied time-dependent properties are selected for index creep tests. The impression creep devices developed are capable of applying tip pressure up to 433 MPa for an indenter of 3 mm in diameter for index creep testing technique. Experimental results obtained from impression creep tests are compared with those from conventional creep tests and the suitability of impression creep tests as an index creep test is explored. The most critical issue in creep tests is the determination of stress level. This issue is investigated through experimental, theoretical and numerical methods. It is proposed that the short-term impression test can be utilized for determination of the stress level in impression creep tests. The experimental results clearly demonstrated that both conventional creep and index creep tests are quite comparable and similar type responses are observed and it is concluded that the impression creep technique can be utilized as an index creep test. Highlights: In this paper, an impression creep testing device is developed as an index creep technique for evaluating time-dependent responses of rocks. Theoretical and numerical studies performed for how to establish interrelations for strain and stress in impression tests and conventional tests. Creep characteristics from impression creep tests on rocks are compared with those from conventional creep tests on the same rocks and good correlations are obtained. The experimental results could be useful for researchers dealing with the estimation of time dependent properties of rocks, rapidly. There is a high possibility for the utilization of the impression creep as an index creep test in the field of rock mechanics and rock engineering. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 07232632 |
| DOI: | 10.1007/s00603-024-04226-5 |
