研究事業 | 株式会社神戸工業試験場
RESEARCH

STATIC STRENGTH AND FRACTURE TOUGHNESS

 For machines and structural applications, basic properties of materials are mechanical properties and fracture toughness. KMTL calibrates and controls testing machines to domestic and international standards (JIS, ASTM, ASME, NK, DIN, ISO and other international standards) and uses standardized test methods to assure accurate and traceable data.

Precision universal testing machine
Tensile testing
Tensile strength chart
Compression testing
Fracture toughness testing
Fracture toughness chart

Expertise and equipment

Tensile (compression, fracture toughness) testing

Hydraulic universal testing machine Precision universal testing machine Test temperature
1000kN, 500kN, 300kN 300kN, 100kN, 50kN Tensile test
Compression test
Fracture toughness test
-196℃, -170℃ to 1200℃
-170℃ to 300℃
-196℃, -100℃ to 600℃

Impact test

Charpy impact tester Test temperature
300 J -196℃, -130℃ to 900℃

Hardness test

Brinnell Vickers
Micro Vickers Rockwell

Standards

Elevated temperature tensile test JIS G 0567
ISO 6892-2
ASTM E21
EN 10002-5
Compression test ASTM E9
KIC test JIS G0564
ISO 12737
ASTM E399

HIGH TEMPERATURE CHARACTERISTICS

 Boilers for power generation, steam turbines and gas turbines, subjected to high-temperature condition, need to be designed and maintained with knowledge of the material’s high-temperature characteristics. KMTL provides data necessary for their basic design and maintenance, from a variety of testing machines including hundreds of creep and creep rupture machines, special relaxation testing machines, creep fatigue, multi-axial creep, miniature-creep testing machines installed in laboratory rooms where room temperature is controlled to within ±3℃.

Main Equipment

Creep rupture testing machine

Relaxation testing machine

Capacity (Single-lever type) Test temperature Capacity Test temperature
50kN, 30kN, 15kN, 3kN RT to 1100℃ 25kN 300℃ to 900℃

Creep fatigue testing machine

Capacity Test temperature
20kN 300℃ to 1100℃

Miniature creep testing machine

Capacity Test temperature
1.5kN 200℃ to 700℃

Standards

Creep rupture test JIS Z 2271
ISO 204
ASTM E139
ASTM E292

FATIGUE CHARACTERISTICS

 For designing fatigue-resistant components and structural members of airplanes, ships, automobiles and power plants, understanding the materials’ fatigue characteristics is essential. KMTL performs standard fatigue tests including rotating bending and tension/ compression testing, low/high-cycle fatigue testing for fatigue design curves, and fatigue crack propagation testing. We also conduct corrosion fatigue tests under various environmental and atmospheric conditions, thermal fatigue testing, and fatigue testing of large and small-scale actual components under loading conditions which simulate actual service conditions.

High cycle fatigue testing machine
Rotating bending fatigue testing machines
Elevated temperature low-cycle
fatigue testing machines
Elevated temperature low-cycle fatigue test

Main equipment

Electro-hydraulic servo fatigue testing machine

Torsion faigue tesing machine

Capacity Test temperature Capacity Test temperature
800kN, 500kN, 250kN
200kN, 100kN, 50kN
30kN, 25kN, 20kN

Underlined:MTS machines
-196℃ to 1200℃ 3kNm
5kNm
RT

Rotaing bending faigue tesing machine

Capacity Test temperature

100〜200Nm
(100Nm)
(200Nm)

RT to 850℃

Plane bending faigue tesing machine

Capacity Test temperature
10〜80Nm
(10Nm)
(15Nm)
(50Nm)
(80Nm)
RT to 700℃

Standards

High cycle fatigue test JIS B 1081
JIS Z 2273
ISO 3800
ASTM E466
Rotating bending fatigue test JIS Z 2274
Elevated-temperature low-cycle fatigue test JIS Z 2279
ASTM E606

MOLDING/MACHINING/WET HEAT AGING OF PLASTIC SPECIMENS

 Resin materials have many advantages. They are lightweight, easy to mold, and highly resistant to water, oil, and chemicals, resulting in a variety of applications in industrial products. The JIS and ASTM standards for plastic testing have been incorporated into ISO standards. KMTL injection-molds and machines JIS and ISO standard specimens and various specimens for physical properties testing.

Injection molded specimens
Environmental testing machines
Die-blanked specimens

Main equipment

Injection molding

ISO-specimen injection molding machines
Model: ISO100GN
Resin temperature: 180 to 300℃
Clamping force: 1010kN
Injection ratio: 151cm³⁄s
Screw diameter: 32㎜
Model: EC100SX-2A
Resin temperature: 300 to 500℃
Clamping force: 980kN
Injection ratio: 161cm³⁄s
Screw diameter: 32㎜
Mold: ISO-A, ISO-B, ISO-D1, ISO-D2,
3-mm thick plate (100×100㎜),
4-mm thick plate (100×100㎜)
Mold: ISO-A, ISO-D2

Machining

Notching tool SD Lever-type sample cutting machine
Notched impact specimen
Bend specimen
Brittleness temperature specimen
Elastomer specimen blanking

Environmental test

Temperature and humidity chamber
Temperature range: -20 to 150 ℃
Humidity range: 20 to 98% RH

Standards

Injection molding JIS K 7152-1
ISO 294

RESIN PROPERTIES

 Plastic materials are susceptible to temperature and humidity change as compared to metals. In a special testing room with a controlled temperature of 23℃±2℃ and relative humidity of 50%±5% to accommodate high-accuracy static and thermal property testing, we conduct wide range of plastic material testing to ISO, ASTM, JIS and other standards including static and thermal property testing.

Tensile test with
contactless extensometer
Tensile strength chart
Thermal mechanical analysis test
Thermal mechanical analysis chart
Load deflection temperature test
Load deflection temperature chart

Expertise

tatic properties testing

Tensile test High/low temperature tensile test Charpy impact test Izod impact test
10kN , 1kN 50kN: -60℃〜250℃
100kN: -180℃〜320℃
0.5J〜15J 1J〜22J
Rockwell hardness test Shore hardness test Tensile modulus test Density measurement test Bend test
HRR, HRL, HRM HDD, HDA

Temperature characteristics

Brittleness temperature test Load deflecting temperature test Melt flow rate test Vicat softening temperature test Thermomechanical analysis test
-50℃ 〜 20℃ Max 300℃

Standards

Tensile test JIS K 7161,7162:1994
ISO 527-1,2:1993
ASTM D638
Thermomechanical test JIS K 7197
ISO 11359-1,2
Izod
Impact test
JIS K 7110
ISO 180
Bending test JIS K 7171
ISO 178:2001
ASTM D790
Charpy impact test JIS K 7111-1
ISO 179-1

METALLOGRAPHY

 Metallographic inspection serves the research of new materials, development of new processing methods, and verification of the soundness of components. Based on sophisticated skills accumulated through our long years of experience, we observe metallographic structures and fine precipitates using optical and electron microscopes.

Precipitates of Ni-base alloy

Main equipment

Optical metallurgical microscope Full-automatic polishing machine

Standards

Macrostructure examination ASTM E340
Microstructure examination ASTM E3,E407
JIS G 0571
Grain size evaluation ASTM E112,E930
JIS G 0551
Nonmetallic inclusion measurement ASTM E45
JIS G 0555

FRACTOGRAPHY AND ELEMENTAL ANALYSIS

 Fractography is the study of the fracture surfaces of materials. Fractographic methods provide us with various information related to the cause of failure and facture mechanisms and are routinely used to determine the cause of failure in engineering components. Using a scanning electron microscope (SEM) and an energy dispersive x-ray spectroscopic analyzer (EDX), we evaluate fracture morphology and analyze element distribution in damaged components, providing highly-reliable data.

Main equipment

Stereoscopic microscope Scanning electron microscope(SEM) Energy dispersive
x-ray spectroscopic analyzer

HEAT TREATMENT

 Metallic materials change their properties greatly when heat-treated. So the accuracy of heat treatment is critical to achieve the best possible properties of metallic materials. Our heat-treatment furnaces, with the temperature control range is 400℃ to 1250℃, provides high-accuracy solution heat treatment and quenching/tempering. The reliability is maintained by periodically calibrating the measuring instruments and heat sensors.

Heat treatment process
Heat treatment temperature curve

Main equipment

High-temperature rising/falling hearth furnace Box electric furnace
600℃ to 1250℃ 400℃ to 1050℃

TECHNICAL ASSISTANCE

 KMTL contributes to the development of the society and industries by providing our best technical services through the field operation, dispatch, temporary transfer of engineers and contracted businesses. Our expertise is based on our long years’ experience of specimen preparation, material testing, and design and manufacture of special equipment.

Outline of technical assistance (engineer dispatch)

1. Basics and elemental technology

Metallographic inspection, analysis, and physical property investigation for metallic and high-polymer materials
Fractographic analysis, characterization analysis, crystal structural analysis
Mechanical strength testing; deformation/stress measurement and analysis
Melting, forging, and heat treatment of metallic materials
Non-destructive inspection and evaluation; testing and evaluation of radioactive materials

2. Machinery and plant technology

Support for design and manufacturing of special testing, inspection, and other equipment
Support for design and manufacturing of sensing and controlling equipment
Performance testing of and maintenance support for machinery and plants
Soundness examination, remaining life evaluation, and damage investigation of structures and components

3. Environmental and chemical technology

Support for test operation, performance measurement and evaluation of plants
Support for measurement of special exhaust gases from environmental equipment

4. Simulation system technology

Support for stress and strain analysis of structures using FEM
Support for constructing device-control, monitoring, and diagnosis systems
Support for design and creation of various data processing and analysis systems

5. Machining and manufacturing technology

Manufacture of various types of test specimens (JIS, ASTM, DIN, BS, and other)
Precision machining of various fixtures, tools, and parts
Maintenance of various types of machine tools

MEDICAL DEVICE EVALUATION TEST

 The medical field, one of the most active fields in research and development, is particularly promising and where large investments are being made.

 KMTL actively promotes collaboration in testing and analysis with the industry, academy and government, contributing to development in the industries. For the medical field, we have established a quality assurance system based on the quality management system (QMS) as a “first class marketing authorization holder” under the Japan’s Pharmaceutical Affairs Law (PAL), to support research and development of medical devices from the viewpoint of a testing laboratory.

 Our customers place high confidence in our testing according to the American Society for Testing and Materials (ASTM) and Japan Industrial Standards (JIS) as well as U.S. Food and Drug Administration (FDA) guidelines.

Fixture for Compatibility Testing in the MR environment

 This equipment, designed and developed according to the ASTM standard, is used to measure the magnetically induced torque produced by the static magnetic field during magnetic resonance imaging on medical devices.

Easy Point Pedicle Screw Guide

 This device guides pedicle screws to the right positions correctly, safely, and effectively.

Material Testing based on Medical Device Standards and Guidelines

 For safety testing / conformance testing / performance testing / comparative testing / functional testing

Material/component testing Tensile testing
Compression testing
Fatigue testing
Hardness testing
Fracture toughness testing
Pulling testing
Metallographic examination and other
Test method planning Failure investigation
Services related to the above

*Standards: ASTM F (American Society for Testing and Materials),
       JIS T, and other standards for materials and devices


Examples of conducted tests
 ・Test Methods For Intervertebral Body Fusion Devices (ASTM F 2077-03)
 ・Standard Test Methods for Static and Dynamic Characterization of Spinal Artificial Discs (ASTM F 2346-05)
 ・Standard Test Method for Tension Testing of Nickel-Titanium Superelastic Materials (ASTM F 2516-06)
 ・Standard Test Method for Strength Properties of Tissue Adhesives in Tension (ASTM F 2258-05)


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