Otwarty dostęp

Modernized Resonant Column and Torsional Shearing Apparatus With Multipoint Contactless Displacement Detection System

Marcin Bujko

Marcin Bujko

University of Warmia and Mazury in OlsztynOlsztyn, Poland
Wyszukaj tego autora
Sciendo|Google Scholar
Bujko, Marcin
, 
Marta Bocheńska

Marta Bocheńska

University of Warmia and Mazury in OlsztynOlsztyn, Poland
Wyszukaj tego autora
Sciendo|Google Scholar
Bocheńska, Marta
, 
Piotr Srokosz

Piotr Srokosz

University of Warmia and Mazury in OlsztynOlsztyn, Poland
Wyszukaj tego autora
Sciendo|Google Scholar
Srokosz, Piotr
 oraz 
Ireneusz Dyka

Ireneusz Dyka

University of Warmia and Mazury in OlsztynOlsztyn, Poland
Wyszukaj tego autora
Sciendo|Google Scholar
Dyka, Ireneusz
  
08 paź 2023
Modernized Resonant Column and Torsional Shearing Apparatus With Multipoint Contactless Displacement Detection System's Cover Image
O artykule
Poprzedni artykuł
Następny artykuł
Zacytuj
Pobierz okładkę
Kategoria artykułu: Special Issue 19th KKMGiIG
Data publikacji: 08 paź 2023
Zakres stron: 382 - 394
Otrzymano: 26 lut 2023
Przyjęty: 11 wrz 2023
DOI: https://doi.org/10.2478/sgem-2023-0018
Słowa kluczowe
© 2023 Marcin Bujko et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Tested material (a) grain size distribution (b) microscopic image of tested sand's grains (Dyka, et al., 2017).
Tested material (a) grain size distribution (b) microscopic image of tested sand's grains (Dyka, et al., 2017).

Figure 2:

The arrangement of magnets on the specimen's surface and Hall sensors on the internal cylinder (a) vertical (A-A) section; the middle dimension line refers to the placement of the Hall sensors and the right dimension line refers to the magnets, (b) horizontal (B-B) section [mm].
The arrangement of magnets on the specimen's surface and Hall sensors on the internal cylinder (a) vertical (A-A) section; the middle dimension line refers to the placement of the Hall sensors and the right dimension line refers to the magnets, (b) horizontal (B-B) section [mm].

Figure 3:

Polycarbonate cylinder with Hall sensors installed on the surface (a) top view, (b) side view.
Polycarbonate cylinder with Hall sensors installed on the surface (a) top view, (b) side view.

Figure 4:

The inside view of the communications interface.
The inside view of the communications interface.

Figure 5:

User Interface of the measurement system control software.
User Interface of the measurement system control software.

Figure 6:

The sand specimen covered with a latex membrane and magnets attached to the surface The main RC tests were carried out with the input parameters presented in Table 2.
The sand specimen covered with a latex membrane and magnets attached to the surface The main RC tests were carried out with the input parameters presented in Table 2.

Figure 7:

Influence of the torque amplitude on the resonant frequency of the specimen (light gray—0.02 V, medium gray—0.1 V, black—0.2 V).
Influence of the torque amplitude on the resonant frequency of the specimen (light gray—0.02 V, medium gray—0.1 V, black—0.2 V).

Figure 8:

Influence of the subsequent loading cycles (test repetitions) on the resonant frequency value. The torque amplitude value is 0.2 V; black—first cycle; medium gray—second cycle; light gray—third cycle.
Influence of the subsequent loading cycles (test repetitions) on the resonant frequency value. The torque amplitude value is 0.2 V; black—first cycle; medium gray—second cycle; light gray—third cycle.

Figure 9:

Influence of the magnets’ installation on the resonant frequency. The torque amplitude is 0.2 V; black—the specimen without magnets; gray—the specimen with the magnets attached to the surface.
Influence of the magnets’ installation on the resonant frequency. The torque amplitude is 0.2 V; black—the specimen without magnets; gray—the specimen with the magnets attached to the surface.

Figure 10:

Results of the TS test for amplitude of 5 V. Raw data from the Hall sensors during the TS test. The arrangement of the graphs corresponds with the location of the sensors.
Results of the TS test for amplitude of 5 V. Raw data from the Hall sensors during the TS test. The arrangement of the graphs corresponds with the location of the sensors.

Figure 11:

Results of one of the RC tests for the amplitude of 8 V. Raw data from the Hall sensors. The arrangement of the graphs corresponds with the location of the sensors.
Results of one of the RC tests for the amplitude of 8 V. Raw data from the Hall sensors. The arrangement of the graphs corresponds with the location of the sensors.

The physical parameters of soil_

Soil type Gs [-] d50 [mm] d60 [mm] d10 [mm] CU [-] emax [-] emin [-] ρ [g/cm3]
silica sand 2.65 0.33 0.41 0.14 3.0 0.68 0.41 1.86

The TS test input parameters_

Testing mode p [kPa] f [Hz] A [V] n [-]
Torsional shearing 50 0.02 5.0 3

RC test results_

RC test number fr [Hz] γ [%] G [MPa]
1. 145.45 0.0069 84.51
2. 125.61 0.0116 62.88
3. 115.48 0.0144 53.27
4. 107.60 0.0185 46.18
5. 101.01 0.0242 40.69
6. 96.01 0.0312 36.73
7. 88.81 0.0388 31.45
8. 83.19 0.0491 27.60

The RC test input parameters_

Testing mode Test number p [kPa] f0 [Hz] ff [Hz] A [V]
1. 100 200 1.0
Resonant column 2. 50 80 180 2.0
3. 60 160 3.0
4. 60 160 4.0
5. 50 150 5.0
6. 50 150 6.0
7. 50 150 7.0
8. 40 140 8.0
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Nauki o Ziemi, Nauki o Ziemi, inne, Nauka o materiałach, Kompozyty, Materiały porowate, Fizyka, Mechanika i dynamika płynów
Kanał RSS czasopisma