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STUDY OF STABILITY OF THE SHOT PEENING INDUCED COMPRESSIVE RESIDUAL STRESSES INTO C55 STEEL AT ELEVATED TEMPERATURES

Authors:

Martin Vicen1

, Libor Trško1

, Otakar Bokůvka1, 2

, František Nový1, 2

, Ružica Nikolić1

, Jana Pastorková1

1University of Žilina, Faculty of Mechanical Engineering, DME, Univerzitná 8215/1, Žilina, 010 26, Slovakia
1University of Žilina, Research Centre, Univerzitná 8215/1, Žilina, 010 26, Slovakia

Received: 12 July 2022
Revised: 14 February 2023
Accepted: 24 February 2023
Published: 31 March 2023

Abstract:

Results of experimental testing of the shot peened steel C55 specimens are presented in this paper. The aim was to establish behaviour of the compressive residual stresses induced by the shot peening at elevated temperatures; namely their stability in terms of temperature and time. Experimental work included verification of the tested material chemical composition, heat treatment (austenitization at 820 °C ± 5 °C for 30 minutes, cooling in the Durixol V70 oil at 20 °C ± 5 °C, high tempering at 450 °C ± 5 °C for 120 minutes, followed by cooling in air), tensile tests according to EN 10002-1 standard, hardness (HRC) measurements, shot peening with parameters Almen intensity 12A and coverage of 100 %, at the incidence angle close to 90° with respect to the specimen surface. The residual stresses state was evaluated by the X-ray diffraction measurement. It was concluded that the elevated temperature of 130 °C and after exposure of 100, 500 and 1000 hours, did not cause a significant decrease in compressive residual stresses.

Keywords:

Residual stresses, stability of residual compressive stresses, shot peening, elevated temperatures

References:

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 9
Number 1
March 2024

Last Edition

Volume 9
Number 1
March 2024

How to Cite

M. Vicen, L. Trško, O. Bokůvka, F. Nový, R. Nikolić, J. Pastorková, Study of Stability of the Shot Peening Induced Compressive Residual Stresses Into C55 Steel at Elevated Temperatures. Applied Engineering Letters, 8(1), 2023: 17-23.
https://doi.org/10.18485/aeletters.2023.8.1.3

More Citation Formats

Vicen, M., Trško, L., Bokůvka, O., Nový, F., Nikolić, R., & Pastorková, J. (2023). Study of Stability of the Shot Peening Induced Compressive Residual Stresses into C55 Steel at Elevated Temperatures. Applied Engineering Letters,  8(1), 17-23. https://doi.org/10.18485/aeletters.2023.8.1.3

Vicen, Martin, et al. “Study of Stability of the Shot Peening Induced Compressive Residual Stresses into C55 Steel at Elevated Temperatures.” Applied Engineering Letters, vol. 8, no. 1, 2023, pp. 17–23, https://doi.org/10.18485/aeletters.2023.8.1.3.

Vicen, Martin, Libor Trško, Otakar Bokůvka, František Nový, Ružica Nikolić, and Jana Pastorková. 2023. “Study of Stability of the Shot Peening Induced Compressive Residual Stresses into C55 Steel at Elevated Temperatures.” Applied Engineering Letters 8 (1): 17-23. https://doi.org/10.18485/aeletters.2023.8.1.3.

Vicen, M., Trško, L., Bokůvka, O., Nový, F., Nikolić, R. and Pastorková, J. (2023). Study of Stability of the Shot Peening Induced Compressive Residual Stresses into C55 Steel at Elevated Temperatures. Applied Engineering Letters, 8(1), pp.17-23. doi: 10.18485/aeletters.2023.8.1.3.

MODELING AND SIMULATION OF SMALL HYDRO-SOLAR PV HYBRID GENERATING SYSTEM FOR COMPLEMENTARY POWER SUPPLY IN A METROPOLITAN CITY

Authors:

Bankole Adebanji1
, Kayode Saka1
, Paul Olulope1
, Taiwo Fasina1
, Adewale Abe1

Wilfred Ajeba1

1Ekiti State University, Ado-Ekiti, Nigeria

Received: 03.07.2022.
Accepted: 30.11.2022.
Available: 31.12.2022.

Abstract:

In this work, a grid-connected small hydro-solar PV hybrid power system (HPS) was modeled to complement electricity supply in Ado-Ekiti metropolis in Nigeria, and hence, investigated the steady state stability of the distribution networks with and without HPS integration. Consumers’ load audit was carried out through measurement of apparent load at peak periods on each outgoing cable riser from the low voltage circuit of the distribution transformer using clamp-on ammeter which represents loads on respective 11 kV feeders. The solar PV system employed the use of JAP6-72-30/4BB solar PV module and average solar radiation intensity of 4.95 w/m 2 was considered when sizing the solar PV power system. The designed and modeled HPS was integrated into the grid through a hydro inverter and five numbers of parallel-connected 2000 kVA grid-tie solar PV inverters. Simulation analysis of the distribution networks with and without renewable energy integration was carried out using DigSILENT power factory. This work analyzed two scenarios for each of the distribution networks. Simulation results indicated that the networks were stable as evident in the analyses of the renewable grid integration and notable improvement on profile voltage (pu) of all the 11 kV distribution networks were observed.

Keywords:

Hybrid power system, micro grids, micro hydro power, solar energy, solar panels

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 9
Number 1
March 2024

Last Edition

Volume 9
Number 1
March 2024