Zobrazeno 1 - 10
of 70
pro vyhledávání: '"O. Chivu"'
Publikováno v:
Fiabilitate şi Durabilitate, Vol 2, Iss 22, Pp 122-131 (2018)
This paper aims to present the study on the implementation of the source code for a Cohen questionnaire meant to detect stress level. The importance of this study consists in a unique mobile app for Cohen test. The results can be used for several r
Externí odkaz:
https://doaj.org/article/f3fbb4c9e9c343fabf30b4861e22e57c
Publikováno v:
Fiabilitate şi Durabilitate, Vol 2, Iss 22, Pp 114-121 (2018)
The case study presented in this article consists in a mobile aplication created on the basis of the Cohen questionnaire meant to detect stress level. The study is a novelty because the mobile app can be used on an undefined number of Android termi
Externí odkaz:
https://doaj.org/article/405055247075438db1e28cecd8d493bb
Publikováno v:
Metalurgija, Vol 55, Iss 3, Pp 465-468 (2016)
The paper presents the results obtained following the nondestructive ultrasonic testing of crankpin shaft of a crankshaft that were reconditioned by welding. After the ultrasonic testing, the reconditioned samples were cut and subjected to visual tes
Externí odkaz:
https://doaj.org/article/68b28c78b948492aa3a35661d536edad
Publikováno v:
Metalurgija, Vol 55, Iss 2, Pp 221-224 (2016)
This paper presents the results of the practical trials carried out based on the calculation assumptions considered within the FEM of the reconditioning by welding of a crankshaft used in the automotive industry. For the validation of the analytical
Externí odkaz:
https://doaj.org/article/d42c3eec949d44d88d52f10b9b5c4381
Publikováno v:
Metalurgija, Vol 55, Iss 2, Pp 281-284 (2016)
One of the aims of our modern society is to reduce the car maintenance costs. The part that most frequently breaks down in the engine block is the crankshaft - in the main journal and crankpin journal areas. This paper presents the effects of welding
Externí odkaz:
https://doaj.org/article/98221253ece6416e99a41e625ff7dc3d
Publikováno v:
Metalurgija, Vol 55, Iss 1, Pp 11-14 (2015)
The industrial activity in non-ferrous alloys foundries leads to the elimination of the pollutants in the atmosphere that may have adverse effects on the environment and human health. This paper presents an evaluation of the pollutantemissions result
Externí odkaz:
https://doaj.org/article/172e5a44021d4d53a1d8a795da5657d3
Publikováno v:
Metalurgija, Vol 55, Iss 1, Pp 55-58 (2015)
The reconditioning by welding process applied to the crankshafts in the automotive industry can be carried out by using various reconditioning technologies that are based on different welding parameters and processes. This paper presents a comparison
Externí odkaz:
https://doaj.org/article/bdf790107f1749a78c7f074d79eabc7d
Publikováno v:
Metalurgija, Vol 54, Iss 4, Pp 679-682 (2015)
This paper presents the results obtained following the Finite Element Method (FEM) simulations on a bike frame made of 3 different materials, Al6061, Carbon Fiber and Ti6Al4V, in order to identify the optimum material for the manufacture of the respe
Externí odkaz:
https://doaj.org/article/7fe5b1fe960843139411704606ca37d0
Autor:
O. Chivu
Publikováno v:
Metalurgija, Vol 52, Iss 4, Pp 465-468 (2013)
The metallic structures realized from OL 52.4k have a very wide use, but they are used especially in case of tools used in mining plants. Due to the important constraints these welded structures are submitted into practice, it is very important to de
Externí odkaz:
https://doaj.org/article/c0cc2711718c414a9592bf569440b1d4
Publikováno v:
Metalurgija, Vol 53, Iss 2, Pp 251-253 (2014)
The determination of static and/or variable stress, in case of complex shaped welded structures is hard to achieve. One solution, though, is the use of finite element method, implemented by means of various specialized software. Nowadays, this method
Externí odkaz:
https://doaj.org/article/5417b27414124c649e66239089d804ee