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High speed Tensile Impact Testing Machine

High speed Tensile Impact Testing Machine

Model: UTHSF-25T; ASTM D7078

UnitedTest high-precision multifunctional high-speed tensile impact testing machine is a high-level testing device designed for dynamic mechanical property testing and impact scenario simulation and validation of materials. It focuses on high strain rate and instantaneous impact load testing scenarios, breaking through the limitations of traditional static testing machines. It can accurately capture the mechanical response data of materials under extreme speed loading, providing professional, high-precision testing support for lightweight material research, automotive safety simulations, and structural performance optimization. It is a core piece of equipment for new material development, automakers’ forward engineering projects, and scientific research institutions.  


The machine offers outstanding high-speed dynamic load testing capability, accurately simulating extreme conditions like collisions, instant stretching, and sudden impacts. It meets the mechanical performance testing needs at high strain rates, perfectly addressing issues of transient impacts and high-speed tensile dynamic tests that conventional machines cannot handle. The equipment offers high testing accuracy, strong functional compatibility, and excellent data stability, fully covering dynamic mechanical and fatigue performance testing for various lightweight materials, suitable for both industrial production testing and detailed scientific research.  


General introduction

UnitedTest high-precision multifunctional high-speed tensile impact testing machine is a high-level testing device designed for dynamic mechanical property testing and impact scenario simulation and validation of materials. It focuses on high strain rate and instantaneous impact load testing scenarios, breaking through the limitations of traditional static testing machines. It can accurately capture the mechanical response data of materials under extreme speed loading, providing professional, high-precision testing support for lightweight material research, automotive safety simulations, and structural performance optimization. It is a core piece of equipment for new material development, automakers’ forward engineering projects, and scientific research institutions.  


The machine offers outstanding high-speed dynamic load testing capability, accurately simulating extreme conditions like collisions, instant stretching, and sudden impacts. It meets the mechanical performance testing needs at high strain rates, perfectly addressing issues of transient impacts and high-speed tensile dynamic tests that conventional machines cannot handle. The equipment offers high testing accuracy, strong functional compatibility, and excellent data stability, fully covering dynamic mechanical and fatigue performance testing for various lightweight materials, suitable for both industrial production testing and detailed scientific research.  


This machine is widely applicable to mainstream lightweight automotive materials such as metals, composites, and engineering plastics. It can systematically test tensile strength, deformation characteristics, fracture performance, energy absorption capacity, and long-term fatigue performance under high strain rate instantaneous impact loads. It provides a comprehensive understanding of material mechanical changes and failure mechanisms under high-speed dynamic conditions. Compared with traditional testing devices, it can achieve full-process high-speed dynamic data acquisition, real-time analysis, and precise fitting. With professional testing algorithms, it can automatically generate core data models like constitutive relationship curves and S-N fatigue life curves.  


In industrial applications, the high-precision test data produced by the device can directly support nonlinear finite element modeling and high-accuracy simulation analysis of automotive high-speed collision scenarios, effectively bridging the gap between simulations and real-world conditions, and greatly improving the accuracy of crash simulations and structural safety design. Relying on actual test data, it can also predict material fatigue life and quantify structural performance, accurately determining the reliability of lightweight materials in vehicle body structures and protective components. This helps automakers optimize material selection, structural design, and production processes.  


As a key testing device for researching the dynamic performance of lightweight automotive materials, the UnitedTest high-speed tensile impact testing machine provides a solid foundation for building a comprehensive dynamic performance database for vehicle lightweight materials. It offers reliable, accurate, and traceable testing data to support new material iteration, automotive lightweighting technology upgrades, and vehicle safety performance optimization. It is widely used in automotive manufacturing, rail transit, new material development, aerospace, and other high-end manufacturing fields.

Key Features

  • Mainframe
  • Oil source system
  • Cooling system
  • Measuring and control system

The main frame is mainly composed of base, test bench, column, beam, locking cylinder, etc., and the test bench and beam are connected into a rigid frame by two columns to form a test space. The connection between the column and the test bench is locked by a nut, and the beam is pushed by a lifting cylinder, which can be moved up and down the column to adjust the test space. After adjusting the test space, the beam is locked to the column by means of a locking cylinder.

(1) Column spacing: 420mm;

(2) Vertical working space: 700mm;

(3) Effective height of the table:  280mm;

(4) Frame stiffness: 4.73×108N/m;

(5) Dimensions: 620mm×628mm×1612mm;

(6) Total weight: about 430kg; 

1.2, Load cell 

(1) Adopt USA Celtron 25KN load cell, overload capacity 150%. placed on the upper beam with self-locking nut;

(2) Displacement sensor: 150mm (±75mm), built-in actuator;

1.3, Actuator

(1) Maximum dynamic test force: ±25KN;

(2) Effective stroke of actuator: 150mm;

(3) Double rod piston structure. Sealing method: guide ring + servo sealing ring (all components imported).

(4) The actuator has a built-in LVDT displacement sensor and an external electro-hydraulic servo valve.

(5) Design the hydraulic buffer zone at the amplitude limit position of the actuator to avoid damage caused by runaway operation;

(6) The use of pilot operated end cover design ensures that the damage of the piston movement to the seal is smaller, so that the life of the seal is longer and the coaxially is better guaranteed;

The oil source system is mainly composed of oil tank body, pump unit, valve block assembly, control box, etc., the pressure output has high/low pressure, using remote control, high and low pressure switching. High pressure is used during the test, and low pressure is used when the test is not done, so as to save energy, reduce heat generation and reduce noise.

2.1, Pumping station frame

It adopts sheet metal welding, closed box, the base and the oil tank body are integrated, and the three sides can be removed, which is easy to maintain, beautiful appearance and convenient operation. Equipped with an accumulator array. 

2.2, Control valve block assembly

(1) Provide instantaneous peak flow for servo actuator, absorb pressure pulsation response speed quickly;

(2) Independent pressure regulation and fast unloading capacity, pressure regulation and unloading do not affect the normal operation of other channels;

(3) Improve the impact resistance of the hydraulic system;

(4) High-precision oil filter to improve oil cleanliness;

2.3, Performance characteristics and technical parameters

(1) Total flow 36L/min, pressure 21Mpa;

(2) Total power 22kW, 380V, AC;

(3) The pump station is manufactured according to the standard modular design, with mature technology and stable performance; Configured relay regulator module, connected to actuator; 

(4) The oil pump adopts the internal meshing gear pump of Japan NACHI company, which adopts involute internal meshing gear meshing transmission, low noise, excellent durability and long life;

(5) The oil pump motor unit is equipped with a vibration damping device (choose a vibration damping pad) to reduce vibration and noise;

(6) The high and low pressure switching valve group is used for the start and stop of the hydraulic system (servo controller remote control);

(7) Fully enclosed standard servo fuel tank. With temperature measurement, air filtration device, oil level display and other functions;

(8) The system configuration brazed plate cooler is installed on the system return pipeline;

The cooling system adopts brazed plate cooler, and the industrial water cooler circulation system is used, the cooling efficiency is high, the effect is good, and the main technical parameters are as follows:

(1) Dimensions: 1250mm×560mm×1200mm

(2) Chilled water flow: 55L/min 

(3) Total input power: 13.5KW

(4) Safety protection: compressor overheating protection, overcurrent protection, high and low pressure protection, overtemperature protection, flow protection, phase sequence/phase loss protection, exhaust overheating protection

(5) Features: easy to operate, beautiful appearance, low noise

(6) Weight: 460Kg

Fully digital controller with PIDF regulation.

– The load signal can be elicited

-Control mode: force, displacement, deformation closed-loop control, and amplitude compensation function.

-Optional: force, displacement, deformation output interface.

- Dynamic closed-loop control frequency (refresh rate): 5kHz.

-Signal generator frequency range: 0~1kHz.

-Control waveform: sine wave, triangle wave, square wave, oblique wave, combined waveform and point connection waveform, etc., and external signal input is possible.

-Advanced fully digital signal processing technology, system resolution of 19/24 bits, eliminating manual conversion of ranges within the full-scale range.

-The measurement signal of the sensor has a variety of filters in the range of 100Hz to 1000Hz, providing high accuracy, low drift, and low noise performance.

-The protection function of the test, the appropriate load can be selected so that the specimen is not destroyed.

-Each control board has 3 digital sensor inputs and 3 analog sensor inputs.

-4-way photoelectric isolation DI, 4-way photoelectric isolation DO.

-Hydraulic source control:

(1) Stop and start the oil pump;

(2) High pressure and low pressure conversion of oil source system pressure.

(3) It has the functions of liquid level alarm, oil temperature alarm and blocking alarm

-Remote operation: with test stop, protection and other information SMS trigger function, during the test, when the test stops for some reason, the information will be sent to the preset mobile phone in the form of SMS, which provides convenience for the operator in the long-term test

Main Technical Specification

1.           Maximum test force25kN
2.      Test force measurement range2%-100%FS
3.      Test force resolution1/250000 of full scale (no binning, no resolution)
4.      Test force indication accuracy± within 0.5%.
5.      Displacement measurement range0-150(±75)mm
6.      Displacement measurement resolution (mm)0.001
7.      Instantaneous displacement speed2 m/s
8.      Displacement measurement indication relative error± within 0.5%.
9.      Test waveformSine wave, triangle wave, square wave, trapezoidal wave, etc
10.  Column spacing420mm
11.  Vertical test space700mm
12.  Test frequency0.01-100 (the higher the frequency, the smaller the amplitude)
13.  Pumping station flow36L/min
14.  Pumping station pressure21MPa
15.  Pump station motor power5.5KW
16.  Form factor

620×628×1612mm

950×1450×1220mm

17.  Total weightAround: 1500kg


Main Accessories


ItemNameQtyRemark
 1         Frame1 set                                                                                  
 2         Actuator 25KN1 set
 3         Servo valve 36L/min1 set
 4         Load cell (25KN)1 set USA Celtron
 5         Displacement Sensor (150mm)1 set
 6         Accumulator (0.63L,31.5MPa)2 set
 7         Hydraulic power system (include below:))

 8         Motor (Swiss ABB) 11KW,380V AC1 set
 9         Pump (14L/min,21MPa  Japan   Nachi)1 set
 10      Valve block assembly1 set
 11      Hydraulic oil Connector etc.,1 set
 12      Electrical parts, replay, AC connector etc.,
 13      Servo control system controller1 set
 14      Fatigue test Software1 set
 15      Computer (HP English Win10)1 set
 16      Fluid part connector all taper sealing1 set
 17      Hydraulic clamping body (tensile grip)1 set
 18      Jaws Φ3~φ18,5~202 sets
 19      Accessories1 set
 20      Operation manual1 pc
 21      Control software manual1 pc
 22      Quality certificate1 pc
 23      Packing list1 pc
 24      External cooling device (Optional)

 25      Other test fixture (optional)


Standard

ASTM D7078 V-Notched Rail Shear Test for Composite Materials

ASTM D7078 V‑Notched Rail Shear Test for Composite Materials

ASTM D7078 determines shear properties of high‑modulus fibre‑reinforced composite materials by clamping a V‑notched specimen between two pairs of loading rails and pulling the rails in tension. The rails transmit shear forces through the faces of the specimen (face‑loading), which allows higher shear forces to be applied than in edge‑loaded methods.

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Beijing United Test Co., Ltd.