RESEARCH CENTER IN STRENGTH OF MATERIALS AND SAFETY OF MECHANICAL STRUCTURES, CABLES AND CONDUCTORS
and Fracture Mechanics;
of composite materials at static loading and fatigue, cracking mechanism, plates
behavior at dynamic loading;
prolongation of steels at high temperatures;
of solutions involved in the stress calculus of curved specimens;
properties of aluminum, steel-aluminum and steel conductors;
and wire ropes and round steel chains;
temperature behavior of steels, stability and creep of long vertical pipes,
curved beams stress analysis;
Analysis and tests about behavior of materials belonging of heavy devices being out of working life-time.
of Steel wire ropes and round steel chains, service and fatigue life, stress -
strain, bending, ropes and chains
for cranes and other hoisting or transporting machines.
- Strain Test. Curves` equations for initial composite, steel and aluminum,
final composite, steel and aluminum.
concerning the life-time prolongation of steels at high temperatures, studies
about the accuracy of solutions involved in the stress calculus of curved
specimens. Researches can be used by electro-technical materials industry and
distributing electrical energy units. There are also useful in order to
participate at international auctions.
concerning the behavior of composite materials at static loading and fatigue,
cracking mechanism, plates behavior at dynamic loading.
is analyzed the influence of working life-time of different types of steel
belonging, of mining equipments being out of working life-time. There were
performed some researches regarding the behavior at variable loads, impacts and
also fracture mechanics analysis.
Creep at ambient temperature tests of aluminum and steel-aluminum conductors in order to certify their quality. The loading and unloading behaviors are described by typical diagrams and equations of curves have been estimated. Experimental researches were performed at ambient and results were extra poled beginning 100 or 1000 hours to 10000 hours.
The life – time
estimation of some strength elements (wire ropes, links, springs, etc) at
imposed loading levels
The strength at fatigue
estimation of some steel and welded elements
The analysis of the
influence of simulated defects about the fatigue strength at welded elements
The estimation of KIC
and JIC for some machine parts steels
Ø The estimation of the dynamic fracture toughness coefficients KId and JId
The analysis of crack
propagation at cyclic loading and under repeated impacts
Estimation of mechanical
characteristics obtained at variable loads
analysis for durability of a bar belonging to a heavy mining machine, by using
fracture mechanics theory
Design devices for
hanging cracking pipes
Ø Theoretical and experimental studies of vertical long specimens under compressive loading also into account thermal effects.
endurance testing, Tensile fatigue testing, Experimental stress analysis,
Fatigue prediction, Research on wires, Standards (ISO-TC 85), Stress-strain,
Breaking test, Creep at ambient temperature test for 6 month, 1 year, 10 years
– test for composite materials, Stress concentration and fatigue, Composite
materials structures computation;
study of equipment for heavy machines with expired life-time, Fracture mechanics
testing, Fatigue with impact, Non-destructive testing;
Temperature Study of Creep Properties, Theoretical Analysis and Creep
Computation for pipes Stability and Creep for vertical long pipes.