Information on the most widely used ASTM standards within the materials testing industry
Model: UTDS, ASTM F2068, ISO 7206 Hip Joint Prosthesis Testing
ISO 7206, ASTM F2068 is a testing standard designed to measure the
durability of the metaphyseal bone components of hip implants. This
testing procedure is applicable to implants with symmetrical planes,
anterior or hyperbolic shapes of the epiphyseal bone, as well as
prostheses used for restorative surgery. This test requires a dynamic
testing machine and ISO 7206, ASTM F2068 fixtures. The lower part of the
test sample is first embedded into a solid medium. Apply a cyclic load
to the head of the sample, causing double-sided bending and twisting
until the sample fractures or reaches the selected number of cycles.
The
ISO 7206, ASTM F2068 standard specifies the test methods and
performance requirements to determine the fatigue performance of the
neck of the femoral components in partial and total hip arthroplasty
under specific test conditions. The fatigue test is conducted with a
frequency of 1 to 30 Hz, R=0.1, a maximum load of 5340N, for 10 million
cycles or until sample failure occurs.
General Introduction
ISO 7206, ASTM F2068 is a testing standard designed to measure the durability of the metaphyseal bone components of hip implants. This testing procedure is applicable to implants with symmetrical planes, anterior or hyperbolic shapes of the epiphyseal bone, as well as prostheses used for restorative surgery. This test requires a dynamic testing machine and ISO 7206, ASTM F2068 fixtures. The lower part of the test sample is first embedded into a solid medium. Apply a cyclic load to the head of the sample, causing double-sided bending and twisting until the sample fractures or reaches the selected number of cycles.
The ISO 7206, ASTM F2068 standard specifies the test methods and performance requirements to determine the fatigue performance of the neck of the femoral components in partial and total hip arthroplasty under specific test conditions. The fatigue test is conducted with a frequency of 1 to 30 Hz, R=0.1, a maximum load of 5340N, for 10 million cycles or until sample failure occurs.
UnitedTest electromagnetic UTDS series fatigue testing devices provide precise sine wave load control with stable peaks, allowing you to obtain professional testing tools that meet the test condition requirements in the standard, as well as accurate and effective testing protocols (SOP), assisting in the mechanical performance analysis of femoral stems.
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Key Features
1), Frame is double column frame structure, servo liner actuator installed at upside of frame. Clamper will be installed on the corsshead and top of actuator piston rod;
2), Frame crosshead adjustment use leading screw rising and falling, manual clamping, elastic loosen structure, ensure the crosshead is reliable during test. And ensure the crosshead is locked unmoving at non-test condition.
3), Column outer surface processed by durionise, enhance the anti-wear ability, improve anti-corrosion ability, and more beautiful appearance.
4), With feature of compact structure, high stiffness, high centering, easy clamp test sample; can match various test fixture to extend test function.

Fatigue testing on an elastomer
1), Servo liner actuator is the key part in this testing machine, the test output load through this actuator; with United Test technology self design, the actuator internally intall on the top side of frame, consist of actuator, servo motor, servo driving sytem, and load cell.
2), Servo liner actuator frequency limitation position have relief area, avoid the damage of out control.
3), Liner sensor with USA Schaevitz company LVDT, move smoothly, piston rod made by extra-fine process, surface chrome-plated polishing to Rα0.4u.
4), Between load cell and clamper connection, push-pull rod and clamper position have specialized gap elimination device, then improve the dynamic response ability.
ISO 7206-4: Implants for surgery -- Partial and total hip joint prostheses -- Part 4: Determination of endurance properties of stemmed femoral components.
ISO 7206-6: Implants for surgery -- Partial and total hip joint prostheses -- Part 6: Determination of endurance properties of head and neck region of stemmed femoral components.
ISO 7206-8: Implants for surgery -- Partial and total hip joint prostheses -- Part 8: Endurance performance of stemmed femoral components with application of torsion.
ASTM F2580: Standard test method for evaluation of modular connection of proximally fixed femoral hip prosthesis.
A new generation fatigue testing system with a large electromagnetic motor as the actuation core;
The direct drive electromagnetic motor operates stably with high repeatability, ensuring precise control of force and displacement;
The built-in electromagnetic actuator has the characteristics of low friction, high repeatability, high system response, and high speed;
Can perform tests such as tensile, compressive, bending, shear, creep, relaxation, etc;
Meet the strict requirements of modern material mechanics testing for high precision, high frequency, high stability, and durability;
It has the characteristics of oil-free, sealless, maintenance free, long service life, high integration, easy installation, and small footprint;
Various fixtures and accessories are available for selection.
1. Environmental Friendliness
No hydraulic oil leakage or pollution
Low noise operation (≤70dB) allows placement in office areas
Energy-efficient (only consumes power during testing)
2. Cost Benefits
Initial investment: Lower than hydraulic systems
Maintenance: No hydraulic fluids, filters, or seals to replace
Running costs: Minimal power consumption
Space savings: Small footprint reduces laboratory space requirements
3. Performance Advantages
Precision: Backlash-free motion with high repeatability
Control flexibility: Smooth transition between load, displacement, and strain control
Safety: Dual-stage drive mechanisms and overload protection
Clean operation: Ideal for testing sensitive materials like medical devices
4. Ease of Use
Ergonomic design: Intuitive touchscreen or PC interface
Quick setup: Easy specimen installation with specialized fixtures
Automation: Programmable test sequences and data logging
Real-time monitoring: Simultaneous capture of force, displacement, strain, and cycle count (up to 10^9 cycles for long-term fatigue testing).
Biomechanical metrics: Automated calculation of fatigue life (S-N curves), modulus degradation, creep-fatigue interaction, and failure mode (brittle vs. ductile).
Compliance with biological testing standards: Pre-programmed test protocols for ISO, ASTM, and FDA guidelines for biomaterials.
Data export: Compatibility with bioinformatics tools for post-test analysis of tissue/biomaterial degradation.
Main Technical Specification
| Max. dynamic load | ±10KN Accuracy ±1% |
| Max. static load | ±10kN |
| Dynamic fluctuation | Less than ±1%FS |
| Actuator max. stroke | ±50mm, accuracy ±0.5%FS |
| Amplitude at Max. frequency | ±1mm |
| Max. Frequency | 0.1HZ~15Hz |
| Max. line velocity | 150mm/s |
| Control mode | Load, displacement, deformation |
| Main test waveform | Sinusoidal wave, triangular wave, square wave, sawtooth wave etc., |
| Pass through Zero | Complete display the pass through zero hysteresis loop curve. |
| Columns number | 2 |
| Vertical space | 750mm |
| Max. test space | 450mm (include test fixture) |
| Test width | 450mm |
| Cooling method | Water cooling |
| Weight | 350kg |
| Dimensions | 785*620*2050mm |
| Standard Power | 380/220V, 50/60HZ, 3 phase, 4Kw |
| Working system | MS Win10 / Win11 |
| Load cell | USA, Vishay Celtron |
Main Accessories
| High Stiffness Frame | 1 set |
| Servo liner actuator | 1 set |
| Servo motor/driver (Japan Panasonic) | 1 set |
| Loadcel: (USA Vishay Celtron) | 1 set |
| LVDT (Japan Tamagawa liner displacement sensor) | 1 set |
| Tensile test fixture (optional according requirement) | |
| Compression platen (100mm) | 1 set |
| Fully digital servo controller | 1 set |
| Professional testing software | 1 set |
| Computer | 1 set |
| Printer | 1 set |
| Documents (Manual, packing list, certificate) | |
Main Structure

UTDS series Electronic Dynamic Universal Testing Machine mainly consist of parts as below:
1, movable loading platform, can 360 degree free adjusting, easy for sample test.
2, Imported actuator, Japan Panasonic driving system.
3, Data collection system, English software, static/dynamic controller.
4, USA Vishay celtron load cell.
6.1 Servo actuator
Actuator mounted on the top pf working table.
● Max. load capacity: 10000N.
● Effective stroke: +/-50mm (total 100mm)
● Actuator include Japan Tamagawa high accuracy displacement sensor.
● Actuator amplitude limitation position designed with buffer zone, avoid the damage caused by out of control.
● Include device to eliminate the gap clearance, minimize the side force, reduce the impact during high frequency test.

6.2, Load cell
● Use the USA Vishay Celtron load cell, 10KN, overload capacity 150%, mounted at front end of actuator piston, with self-lock nut.
● Calibrated before delivery.
6.3, Data collection system and controller
Servo control system include fully digitally servo controller, computer, software etc.,
1)Controller main consist of:
● Controller frame SUPERTEST T8.3, max. upgrade to 6 channel.
● With two sensor signal unit (load, displacement)
● Signal generator unit
● Computer
2)Controller frame SUPERTEST T8.3 specification:
● Control unit: fully digital PIDF control.
● Frequency range: 0.01 ~15HZ, resolution: 0.01Hz
● Control waveform: Sine wave, Triangle wave, square wave, oblique wave, half of wave etc.,
● Control mode: Load, displacement close-loop control.
● System with load cell calibration, zeroing etc., function.
3)Main function of controller:
● Controller with various corresponding software suite, can meet kinds of different test requirement.
● With calibration system to help customer to calibrate the machine easily.
With multi-control mode, can realize smooth swift, with automatically zeroing, save and recover PID setting, automatically data collection, sample protection function etc.,
Software
Main interface:



Critical Applications in Tissue Engineering & Biomaterials
1. Orthopedic Tissue Engineering
Fatigue testing of 3D-printed bone scaffolds (assessing durability under cyclic compression over 10^6 cycles)
Dynamic fatigue of cartilage constructs (evaluating glycosaminoglycan (GAG) retention under joint-like cyclic loading)
Tendon/ligament graft fatigue (testing tensile fatigue resistance of collagen-based constructs)
2. Cardiovascular Biomaterials
Pulsatile fatigue testing of biodegradable stents (assessing radial strength retention over cardiac cycles)
Cyclic flexure testing of vascular grafts (mimicking arterial wall deformation during blood flow)
Fatigue resistance of heart valve leaflets (dynamic bending/tensile loading to simulate valve opening/closing)
3. Soft Tissue Engineering
Fatigue testing of skin substitutes (cyclic stretching to mimic movement-induced deformation)
Bladder/ureteral scaffold fatigue (cyclic distension to simulate urine filling/emptying)
Neural tissue scaffolds (low-force cyclic shear loading to mimic spinal cord motion)
4. Biomaterial Development
Fatigue characterization of biodegradable polymers (PLGA, PCL) for implantable devices (tracking mechanical degradation as the material resorbs)
Ceramic scaffold fatigue (assessing crack propagation in hydroxyapatite-based bone grafts)
Composite biomaterials (e.g., polymer-fiber scaffolds for tissue regeneration) fatigue life validation
Compliance with Industry Standards
| Standard | Application |
|---|---|
| ASTM F1813 | Fatigue testing of metallic bone plates/screws |
| ISO 10993-14 | Mechanical testing of degradable biomaterials |
| ASTM D7137 | Flexural fatigue of polymer biomaterials |
| ISO 7206-4 | Fatigue testing of hip joint implants (low-force components) |
| FDA 21 CFR Part 860 | Biomechanical testing of medical devices (tissue-engineered products) |
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