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[135090] Artykuł:

Assessment of the Structural Integrity of the Portal Crane Elements After Long-Term Operation.

Czasopismo: Materials   Tom: 17, Strony: 6133
ISSN:  1996-1944
Opublikowano: Grudzień 2024
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Do oświadczenia
nr 3		 Grupa
przynależności		 Dyscyplina
naukowa		 Procent
udziału		 Liczba
punktów
do oceny pracownika		 Liczba
punktów wg
kryteriów ewaluacji
Ihor Dzioba orcid logo WMiBMKatedra Podstaw Konstrukcji Maszyn*Takzaliczony do "N"Inżynieria mechaniczna2570.0070.00  
Olha Zvirko Niespoza "N" jednostki025.00.00  
Robert Pała orcid logo WMiBMKatedra Podstaw Konstrukcji Maszyn*Takzaliczony do "N"Inżynieria mechaniczna2570.0070.00  
Oleksandr Oliynyk Niespoza "N" jednostki025.00.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 140

Pełny tekstPełny tekst     DOI LogoDOI    
Keywords:

portal crane  microstructure  long-term operation  mechanical properties  fracture  toughness  FAD FITNET assessment procedure 


Abstract:

Evaluating the current technical condition and residual life of structures that may have
reached or exceeded the end of their design life is a challenging issue in many industrial sectors. This
paper focuses on the assessment of the structural integrity of structural elements of a seaport portal
crane after operation for about 33 years. Test specimens were extracted from two crane elements, a
jib (element A) as the most seriously loaded unit and, for comparison, a boom (element B) as the
less loaded one, and machined in two different orientations, longitudinal and transversal. Both
crane elements were made of a low-carbon rolled steel. The analysis was performed according to the
FAD approach of FITNET Procedures. The basic level of analysis was used. For this purpose, the
strength and fracture toughness characteristics of the steel from tested elements were determined
experimentally. The strength and plasticity properties of the steel of both elements were similar.
At the same time, the fracture toughness characteristics differ for the elements A and B and for
the longitudinal and transverse specimen directions. The results of the FAD (FITNET) analysis
performed for the elements containing a central crack loaded by tensile stress showed that they are
not susceptible to failure. The relative length of cracks for which the critical state will be reached is
also estimated.


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