Evaluation of Medical Equipment/Implant Materials

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Tensile Test and Fatigue Test of Implant Wires

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Evaluation of tensile strength and fatigue strength of metallic wires under cyclic loading.

Outline of Test Method

Titanium, titanium alloy and stainless steel wires are widely used in the medical field, for example, in dentistry, catheters and fixation of broken bones. Use of a dedicated tensile test jig makes it possible to perform tensile tests and fatigue tests with higher accuracy by gripping the wire sample without causing stress concentration.

Outline of Test

Corresponding standard N/A
Test environment Constant temperature, constant humidity, in atmosphere
Test methods Tensile test, tensile fatigue test
Max. load 2kN
Max cycle frequency 50Hz
Type of test piece Metal wire (recommended length: 1.5 m or more), diameter: φ0.3 mm - φ1.5 mm

Example of Tensile Fatigue Test of Titanium Wire

Test Conditions

Test specimen φ1.0 mm titanium wire
Cycle frequency 10Hz
Stress ratio 0.4
  • Appearance of fatigue testing machine
    Appearance of fatigue testing machine
  • Condition of fatigue test of titanium wire
    Condition of fatigue test of titanium wire
  • Load-cycles curve
    Load-cycles curve

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