SVIBOR - Project code: 2-08-197

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

SVIBOR - Collecting Data on Projects in Croatia

Project code: 2-08-197


FATIGUE STRENGTH OF STRUCTURES WITH AND WITHOUT FATIGUE CRACKS


Main researcher: GRUBIŠIĆ, VATROSLAV (174685)


Assistants
Type of research: applied
Duration from: 01/01/91. to 12/31/95.
Papers on project (total): 68
Papers on project quoted in Current Contents: 10
Institution name: Fakultet elektrotehnike,strojarstva i brodogradnje, Split (23)
Department/Institute: Mechanical engineering and naval architecture
Address: Ruđera Boškovića bb.
City: 21000 - Split, Croatia
Communication
Phone: 385 (058) 563-777
Fax: 385 (058) 563-877
E-mail: DOMAZET@SPLIT.FESB.HR
Summary: The project consists of several parts and the most important are: - Experimental and numerical fatigue life determiation of components and structures under variable loads and other service conditions, to the crack origin, - Experimental and numerical estimation of crack propagation with different crack forms and sizes (fracture mechanics). Welding errors are special treated as a place of crack origin and propagation, as well as their influence on fatigue strength of welded structures. - Experimental and numerical analysis of different repair methods for fatigue crack retardation or its stopping, due to extension of service life and avoiding the final failure, - Preparation of recommendations for improvement of fatigue strength at design stage, manufacturing and assembling, - The best method determination for successful (optimal) repairs of cracked large structures.

Keywords: STRENGTH UNDER OPERATIONAL CONDITIONS, FATIGUE, CRACKS, REPAIRS, RESIDUAL STRESSES, LIFE TIME, NUMBER OF CYCLES, FRACTURE MECHANICS

Research goals: The main goals of this project are: - systematization of service life estimation methods, for large metal constructions exposed to different forms of variable load, up to the origin of the first fatigue crack, - examination of all parameters, such as: production conditions (type and quality of weldments), cold deformation, residual stresses, material and shape of component, etc, - numerical estimation of service life under the variable loads, since initial crack to the final failure (fracture mechanics), for characteristic shapes of components and fatigue cracks, - analysis of existing procedures for fatigue damage repairs and determination of the most successful one as well as establishing the parameters for its optimal performance, - formulation of some recomendations for the procedures which can improve the fatigue strength (endurance limit) of structures in design, manufacturing and assembling stage

COOPERATION - PROJECTS


  1. Name of project: Preparation and bending fatigue tests of Al-alloy specimens for car industry.
    Name of institution: Fraunhofer Institut fuer Betriebsfestigkeit (LBF)
    City: 64289 - Darmstadt, Deutschland

COOPERATION - INSTITUTIONS


  1. Name of institution: FRAUNHOFER INSTITUT FUER BETRIEBSFESTIGKEIT (LBF)
    Type of institution: University/Faculty
    City: 64289 - Darmstadt, Deutschland

  2. Name of institution: Hrvatski registar brodova (HRB)
    Type of institution: Institution whose primary activities ar
    City: 21000 - Split, Croatia

  3. Name of institution: Brodogradilište Split
    Type of institution: State institute
    City: 21000 - Split, Croatia

OTHER ACHIEVEMENTS


  1. Name: Umaralica za savijanje BTM-1
    Type of achievement: Prototypes
    Authors: Ž. Domazet, T. Piršić, J. Papić

  2. Name: Umaralica za savijanje uz rotaciju
    Type of achievement: Prototypes
    Authors: Ž. Domazet, J. Barle, T. Matić

  3. Name: Naprava za precizno opterećenje savijanjem
    Type of achievement: Teaching aids and educatio
    Authors: J. Barle

  4. Name: Laboratorij za Pogonsku čvrstoću
    Type of achievement: Teaching aids and educatio
    Authors: Ž. Domazet, T. Piršić, J. Barle, T. Matić, M. Šušnjar

  5. Name: "I Seminar Pogonska čvrstoća" (1991), FESB-Split
    Type of achievement: Other
    Authors: V. Grubišić, Ž. Domazet

  6. Name: "II Seminar Pogonska čvrstoća", (1992) FESB-Split
    Type of achievement: Other
    Authors: V. Grubišić

  7. Name: "III Seminar Pogonska čvrstoća", (1993) FESB-Split
    Type of achievement: Other
    Authors: V. Grubišić, Ž. Domazet

  8. Name: Kolegij "Pogonska čvrstoća", (fond sati 2+2) IV godina studija strojarstva na FESB-u, od 1991.
    Type of achievement: Other
    Authors: V. Grubišić, Ž. Domazet

  9. Name: Analiza uzroka loma i prijedlog sanacije 100 kN dizalice u Luci Split.
    Type of achievement: Studies of conduct
    Authors: Ž. Domazet, I. Duplančić, i dr.

  10. Name: Prijedlog sanacije zupčanika mlina cementa u tvornici"DC Sv. Kajo"-Solin.
    Type of achievement: Studies of conduct
    Authors: Ž. Domazet, J. Papić

  11. Name: Prijedlog sanacija zupcanika mlina "DC Sv. Juraj"-Solin.
    Type of achievement: Studies of conduct
    Authors: Ž. Domazet, J. Papić

  12. Name: Pregled i prijedlog sanacije konstrukcije pokretnog mosta Trogir-Čiovo.
    Type of achievement: Studies of conduct
    Authors: Ž. Domazet, R. Deželić

  13. Name: Prijavljena disertacija 12.01.1993. FSB-Zagreb: "Numeričko modeliranje postupka zaustavljanja širenja pukotine"
    Type of achievement: Other
    Authors: Mr. N. Vulić

  14. Name: Prijavljen magistarski rad 14.09.1993, na FSB-Zagrb: " Određivanje zaostalih naprezanja postupnim zabušivanjem"
    Type of achievement: Other
    Authors: J. Barle, dipl.inž.
Other information about the project.
MZT Croatian language SVIBOR Alphabetic list Sorted on project code Sorted on institutions Search help
Ministry of
Science and
Technology		 Croatian
language		 Svibor
homepage		 Alphabetic
list		 Sorted on
project code		 Sorted on
institutions		 Search Help
Last update: 09/19/95
Information: svibor@znanost.hr