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Projects / Programmes source: ARIS

Thermo-mechanically loaded exhaust manifold and its durability

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Research activity

Code Science Field Subfield
2.11.03  Engineering sciences and technologies  Mechanical design  Special development know-how 

Code Science Field
T210  Technological sciences  Mechanical engineering, hydraulics, vacuum technology, vibration and acoustic engineering 
Keywords
Temperature, thermo-mechanical fatigue, stress-strain states, durability, service life
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (8)
no. Code Name and surname Research area Role Period No. of publications
1.  21351  PhD Miha Janežič  Materials science and technology  Researcher  2008 - 2009  325 
2.  13469  PhD Marko Nagode  Mechanical design  Head  2008 - 2011  812 
3.  26561  PhD Simon Oman  Mechanical design  Researcher  2010 - 2011  254 
4.  24245  PhD Uroš Rosa  Mechanical design  Junior researcher  2008  67 
5.  29047  PhD Domen Šeruga  Mechanical design  Researcher  2008 - 2009  337 
6.  22498  PhD Boštjan Veber  Mechanical design  Junior researcher  2008 - 2009  68 
7.  20659  PhD Andrej Wagner  Mechanical design  Researcher  2010 - 2011  131 
8.  29048  PhD Aleš Zalaznik  Electronic components and technologies  Researcher  2008 - 2011  63 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0782  University of Ljubljana, Faculty of Mechanical Engineering  Ljubljana  1627031  29,214 
Abstract
Durability prediction of thermo-mechanically loaded components stands for an up-to-date scientific & research challenge. Although a number of publications exists, there are still no unique guidelines that could be used by the industry in the development of technologically highly complex products, such as automotive engine blocks, exhaust manifolds or breaking systems. Based on the research accomplished so far, we can conclude that especially automotive industry wants to replace the specific, complex and expensive procedures used to predict the durability of thermo-mechanically loaded components with the procedures that are more time-saving and cheaper. The programme group with partners have successfully developed and published original scientific knowledge for several years and transferred it successfully to the industry (CIMOS, LMS, BOSAL). The coupled uniaxial elastoplastic and viscoplastic stress-strain model, developed in the programme group, will be transformed into a multiaxial one. This is how thermo-mechanical loads and damage caused by fatigue, creep or oxidation can be linked directly without approximate formulas. The model parameters will be based on isothermal, standardized low cycle fatigue tests and relaxation tests. Higher reliability of durability prediction and lower experimental costs are expected.
Significance for science
The project group (PG) is a part of the programme group P2-0182 and has been successfully dealing with problems of thermomechanical fatigue of automotive parts since 2001. In the past eight years the PG has achieved tremendous achievements. Results of the past intensive research work have been already implemented (project nr. FS 5/41-07) in the professional software package LMS Virtual.Lab of the worldwide programme developer LMS. At the same time, a very successful cooperation and knowledge transfer with CIMOS is continuing. The project has made possible the continuation of the scientific development of the programme group in the field of thermomechanical fatigue and simultaneous further transfer of knowledge into industry. The project helps CIMOS in the process of saving appearances as a worldwide development supplier of termomechanically loaded automotive parts. CIMOS has proven its ambitions and important strategic goals in the mentioned area in the past years. Therefore it invested considerable financial resources into trained specialists, research and equipment. The project has promoted the started positive movements.
Significance for the country
The project group over the Centre for development evaluation (CRV) in cooperation with CIMOS and other industrial partners takes care for the education of new human resources for more than 10 years. During the graduate and postgraduate study they prepare for a smooth transition from faculty to industry. With the proposed project the development of the human resources in a very specific field is possible. Because of the very pretending development of the thermomechanically loaded automotive parts, also very scientifically complex, the project also contributes to the promotion of the country. Cooperation with LMS enables further access to foreign knowledge. The project contributes to the development of the information and communication technology, the result of the project will also be a software which will make possible a simple usage of new scientific discoveries in the industry. Mastering of the thermomechanical fatigue is a very complex scientific branch, it brings inovations and enables a development of technologically very difficult products.
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