High-Frequency Resonant Fatigue Testing Machine
The HFT series high-frequency resonant fatigue testing machines are designed for evaluating the fatigue fracture resistance of metallic and composite materials, as well as components and structural parts.
With appropriate fixtures and accessories, the system can perform S-N fatigue tests, KIC/JIC fracture toughness tests, CTOD measurements, and a wide range of crack initiation and crack propagation studies. Fatigue testing machines are particularly suitable for testing components such as plates, gears, crankshafts, threads, bolts, screws, studs, chains, connecting rods, compact-tension specimens, valve components, and many other mechanical parts under alternating cyclic loads. They also support a full range of fatigue modes, including tension-tension, compression-compression, tension-compression, symmetric or asymmetric loading, block programmed loading, waveform-modulated tests, as well as three-point, four-point, eight-point bending, torsion, static fracture toughness, and plane-strain fracture mechanics. When equipped with dedicated environmental systems, the fatigue tester can perform fatigue testing under high/low temperature, corrosion, pressure, or combined environments.
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Hydraulic grips -
Manual tension grip -
Bending grip -
CT specimen grip -
SEB specimen fixtures
- GB/T 2611-2022, GB/T 25917.1-2019, GB/T 16825.1-2022, GB/T 3075-2021, GB/T 26076-2010, GB/T 21143-2014, GB/T 4161-2007, GB/T 6398-2017, GB/T 14212-2010, GB/T 1243-2006, GB/T 21839-2019, GB/T 28900-2022, GB/T 1499.2-2018, GB/T 5224-2023, GB/T 13682-1992, GB/T 20736-2006, GB/T 3098
- ISO 4965, ISO 204, ISO 6934-4: 2020, ISO 606:2004, ISO 10190, ISO 15654, ISO 15630-3, ISO 15630-1
- ASTM E647, ASTM E467-2008, ASTM E1012-2005, ASTM E399-2017
- JB T 5488-2015, JJG 556-2011, HB 5287-1996
- Static loading is applied through a servo-motor-driven ball screw, while dynamic loading is provided by an electromagnetic resonant exciter, eliminating interference between static and dynamic forces. Enables combined static-dynamic dual-mode testing.
- High test frequency, short cycle time, extremely low energy consumption. Electromagnetic resonance offers testing efficiency far higher than servo-hydraulic systems while consuming only ~3% of the power.
- Servo motor enables fast and precise mean-load control.
- PWM excitation for enhanced control stability
- Wide applicability through diverse accessories supports a broad range of specimens, geometries, and test configurations.
- Comprehensive protection system includes overload protection, mechanical limit protection, exciter overcurrent protection, specimen-break protection, frequency-shift protection, crosshead limit protection, and more.
- High-rigidity 4-column frame with dual ball screws ensures excellent structural stability under high-frequency cyclic loads.
- Coaxiality adjustment system guarantees accurate alignment of upper and lower grips for reliable fatigue results.
- Large, adjustable magnetic gap accommodates a wide range of specimen sizes and geometries.
- Selectable coil configurations switching via a dedicated converter allows operation in multiple resonant modes.
- Hydraulic and manual threaded clamping modes enables fast, reliable, and durable gripping for different test materials.
- Multi-level mass adjustment for frequency tuning supports fine adjustment of resonant frequency based on test requirements.
- T-slot worktable for accessory expansion, convenient for installing auxiliary fixtures and environmental devices.
| Model | | | | | | ||||
| Max. mean force, kN | 50 | 100 | 250 | 500 | 1000 | ||||
| Max. mean load, kN | ±50 | ±100 | ±250 | ±500 | ±1000 | ||||
| Max. force amplitude, kN | ±25 | ±50 | ±125 | ±250 | ±500 | ||||
| Max. displacement, mm | 4 (±2) | 2 (±1) | 2 (±1) | ||||||
| Test frequency range, Hz | 50-320 | 50-285 | 50-285 | 50-285 | |||||
| No. of frequency steps via attach/detach dead weights | 6 | 8 | 8 | 8 | 8 | ||||
| No. of guide columns | 4 | 4 | 4 | 4 | 4 | ||||
| No. of lead-screw drives | 2 | 2 | 4 | 4 | 4 | ||||
| Drive voltage adjustment | Automatic | ||||||||
| Sampling and control frequency, kHz | 10 | ||||||||
| PC communication | LAN cable | ||||||||
| Specimen clamping | Hydraulic grip, manual thread type | ||||||||
| Frame stiffness at 1000mm crosshead separation, kN/mm | 180 | 400 | 380 | 980 | 980 | ||||
| Drive stations | 1 | 3 | 3 | 4 | 6 | ||||
| Full loading at full frequency | Yes | ||||||||
| Coaxiality | ≥5% | ||||||||
| Zero drift | ±1% | ||||||||
| Relative resolution | 0.5% | ||||||||
| Static tests and for mean force control | AC servo motor | ||||||||
| Zero point relative error of force measurement system | ±0.5% | ||||||||
| Static force reading accuracy | ±0.5% | ||||||||
| Static force relative repeatability | 1% | ||||||||
| Static force relative reversibility error | ±1.0% | ||||||||
| Cyclic force reading accuracy | ±2.0% | ||||||||
| Cyclic force reading repeatability | ±2.0% | ||||||||
| Peak cyclic force reading accuracy | ±2.0% | ||||||||
| Peak cyclic force reading repeatability | ±2.0% | ||||||||
| Cyclic force reading fluctuation in 10 min | ±2.0% | ||||||||
| Peak cyclic force reading fluctuation in 10 min | ±2.0% | ||||||||
| Timer range | ≥9x109 | ||||||||
| Loading speed (mm/min) | 0-550 | 0-450 | 0-550 | 0-250 | 0-250 | ||||
| Max. crosshead speed (mm/min) | 800 | 600 | 880 | 700 | 700 | ||||
| Position repeatability (µm) | ±8 | ||||||||
| Static force control range (MPa/s) | 0~30 | ||||||||
| Motor with brake function | Yes | ||||||||
| Static force loading by | Servo motor | ||||||||
| Dynamic force loading by | Electromagnetic | ||||||||
| Noise (dB) | ≤90 | ≤100 | ≤110 | ≤115 | ≤115 | ||||
| Weight (kg), without grip | 1800 | 4200 | 4500 | 13000 | 20000 | ||||
| Frame dimension (LxWxH), mm | 660x 915x 2500 | 685x 1130x 2820 | 820x 1150x 3130 | 1500x 1350x 3600 | 1550x 1700x 4600 | ||||
| Control cabinet dimension (LxWxH), mm | 450x 800x 1200 | 550x 1080x 1500 | 550x 1080x 1500 | 550x 1080x 1500 | 550x 1080x 1500 | ||||
We also provide a variety of accessories for all types of mechanical testing equipment.