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Automatic Instrumented Charpy Impact Testing Machine

Automatic Instrumented Charpy Impact Testing Machine

Model: JBW-300H, ISO 14556, ASTM E2298

JBW-H series instrumented impact tester is adopts advanced foreign technology and cooperate with China National Engineering & Physical research institute to developed a new products. Instrumented impact tester is measuring the impact value, collect and analysis the impact process data, figure energy curve, then supply details data for engineers to study and analysis material character. Through the force sensor (range 0-40KN) and the intelligent data acquisition system, the force-time curve of the impact process can be collected in real time. 

Conform with standard: ISO 14556 (Metallic materials — Charpy V-notch pendulum impact test — Instrumented test method) , ASTM E2298

The impact testing machine commonly referred to is the Charpy notch impact testing machine, which operates on the principle of the pendulum impact testing machine, with its counterpart being the drop weight impact testing machine. As electronic technology has advanced and materials science has progressed, the testing requirements for various new materials have become increasingly stringent, leading to the emergence of oscillographic impact testing machines, also known as instrumental impact testing machines, which essentially reflect the dynamic tearing process of materials. The oscillographic impact testing machine system is the world's most precise dynamic load measurement system. By using strain gauges, the instrumental impact hammer measures the force applied during the impact process, offering multiple advantages, the most important of which is determining force and energy. For the pendulum impact testing machine, energy is determined through a photoelectric encoder and independently using the oscillographic impact hammer. In addition to measuring energy, other data can also be obtained (i.e., data beyond absorbed energy), such as characteristic load, deflection, and energy.


General Introduction

JBW-H series instrumented impact tester is adopts advanced foreign technology and cooperate with China National Engineering & Physical research institute to developed a new products. Instrumented impact tester is measuring the impact value, collect and analysis the impact process data, figure energy curve, then supply details data for engineers to study and analysis material character. Through the force sensor (range 0-40KN) and the intelligent data acquisition system, the force-time curve of the impact process can be collected in real time.

Conform with standard: ISO 14556 (Metallic materials — Charpy V-notch pendulum impact test — Instrumented test method) , ASTM E2298


The impact testing machine commonly referred to is the Charpy notch impact testing machine, which operates on the principle of the pendulum impact testing machine, with its counterpart being the drop weight impact testing machine. As electronic technology has advanced and materials science has progressed, the testing requirements for various new materials have become increasingly stringent, leading to the emergence of oscillographic impact testing machines, also known as instrumental impact testing machines, which essentially reflect the dynamic tearing process of materials. The oscillographic impact testing machine system is the world's most precise dynamic load measurement system. By using strain gauges, the instrumental impact hammer measures the force applied during the impact process, offering multiple advantages, the most important of which is determining force and energy. For the pendulum impact testing machine, energy is determined through a photoelectric encoder and independently using the oscillographic impact hammer. In addition to measuring energy, other data can also be obtained (i.e., data beyond absorbed energy), such as characteristic load, deflection, and energy.


This impact tester is mainly consist of automatically high and low temperature device (optional), auto-feeding system, and impact tester load frame, can be used test, analysis the accuracy material anti-impact performance. Tester is controlled by computer, rising pendulum, hang pendulum, impact, stop all controlled by PC.

Key Features

  • Load frame
  • Control system, Software
  • Touching screen program
  • Standard

1), Comply with GB/T 19748-2005, ISO 14556 : 2000(E),  ASTM E23, ASTM E2298 etc.; 

2), Loadframe base and leading column integrated design, overall process, with high stiffness, and improve test stability;

3), Impact axis adopt Charpy type, reasonable the radial direction load, maximum decrease energy loss caused by the bearing friction;

4), Adopt two level standard deceleration motor to rise the pendulum, rising and hang pendulum adopt hydraulic buffer to smooth the action. 

5), Pendulum is round shape swing type, ensure the strike center accuracy, and precision pendulum moment; 

6), Can achieve parameter of Impact velocity, impact time, impact energy, absorb energy, displacement, crack forming energy, crack extension energy, yield load, yield time, peak load, time of peak load, displacement of peak load, energy of peak load, unstable crack extension start load, unstable crack extension stop load, unstable crack extension start energy etc. 

7), Working principle: through the angle displacement sensor to measure pendulum pre-rising angle and rising angle after break specimen, then obtain tester impact energy and remain energy after specimen break, and supply each sampling point velocity parameter; pendulum impact break the specimen at one time, the load sensor will measure the load changement during this period, and figure the load-time curve. Through software analysis load-displacement and other data, to help customer study the specimen deformation and breakage character; 

8), Safety pin; and all close safety cover.

1), Software main interfcace include 5 parts: Headline, Function key, test information, figure indication, key data zone;

2), Function key area include: Test, rising pendulum, release pendulum, calibration, Zero, rising angle, sensor choosing, data storage,  test report etc.;

3), Test information area include: date, test condition, specimen number, standard, blade radius etc.;

4), Key data and figure indication area is at middle of the interface, choose certain curve name, can show relative wave figure, and key test data. Underside is operation key, like readout, coordinate indication, zoom in, zoom out, etc., Key data include impact velocity, impact time, impact energy, absorb energy, displacement, crack generation energy and so on.


Automatic Instrumented Charpy Impact Testing MachineAutomatic Instrumented Charpy Impact Testing Machine


1).  Operating Language Model: Chinese/English, switch freely between Chinese and English except Print interface

2).  Automatic taking pendulum: first time taking pendulum by hand, after taking pendulum, the impact tester will taking pendulum again. The display area will display test result when each testing is finished. In groups of three tests, One group is finished, the average value of three impact tests can be available. New group test will be done after restarting 

3). Store function: 100 test data will be stored, including test name, original test value, average value, test time etc

4). Print function: the present data and past data can be stored by USB, invented print the picture

5). Alarming functions: when the impact tester have trouble, touch screen will display and provide handing method.


Touching Screen Pendulum Impact Testing MachineTouching Screen Pendulum Impact Testing Machine
Test result interfaceMain interface



ASTM E23 “Standard Test Methods for Notched Bar Impact Testing of Metallic Materials”

ISO 14556 “Steel -- Charpy V-notch pendulum impact test -- Instrumented test method”

ASTM E2298 Instrumented impact test standard, matching E23 to collect force-displacement curves.

GB/T19748 etc.,


Main Technical Specification

ModelJBW-H
Impact energy150J/300J/450J/600J/750J
Distance between pendulum center to impact point750mm
Impact velocity5.24m/s
Pendulum preparing angle150º
Span of specimen seat40+0.2mm
Round angle radius of GripsR1-1.5mm
Round angle radius of striking edgeR2-2.5mm, R8±0.08mm
Impact blade thickness16mm
Angle of impact knife30°
Specimen size10mm*10mm*55mm
Load sensor accuracy≤±1﹪FS
Angle displacement resolution0.1°
Lower temperature modeLiquid nitrogen
Higher temperature modeHeating wire
Sample box capacity6 pcs, uniform 4 pcs
High and low temperatureAvailable and Optional
Sample Feeding systemcan store 20 pcs sample at one time
Power supply3 phases 4 lines, 50Hz, 380V


Main Accessories

High Stiffness Frame1   set
Impact pendulum1   set
Small pendulum1   set
R2, R8 impact blade edge (with 50KN force transducer)1   set
Electric operation panel1   set
Automatic hitch pendulum device (on the loadframe)1   set
Safety pin (on the loadframe)1   set
Supporting seat span adjusting device (L=40)1   set
Specimen center device ( L=40 V.U type)1   set
Safety cover1   set
Device to dismantle pendulum1   set
Terra anchor bolts (M16×300)1   set
Documents (Manual, packing list, certificate)


Standard

ISO 14556 Instrumented Impact Test Charpy V-notch pendulum impact

ISO 14556 applies exclusively to instrumented Charpy V-notch pendulum impact tests for all metallic materials. It captures real-time force-displacement curves and a full set of dynamic characteristic parameters. 

ASTM E2248, ISO 148-4 Charpy Impact Testing of small specimen

ASTM E2248 and ISO 148-4 governs impact tests using fully miniaturized Charpy V-notch (MCVN) specimens, where all linear dimensions (length, cross-section, ligament) are proportionally reduced. It is clearly differentiated from subsize specimens specified in ASTM E23: subsize specimens retain standard length, notch geometry and surface finish while only reducing thickness, whereas MCVN specimens shrink the entire structure to maximize test quantity from limited material. 

ASTM E2298 Instrumented Impact Testing of Metallic Materials

ASTM E2298 dedicated to instrumented Charpy V-notch (CVN) and miniaturized Charpy V-notch (MCVN) impact tests for metallic materials. Instead of only obtaining a single absorbed energy value, this standard extracts force, displacement and segmented energy parameters to analyze the full fracture process. 

What's the difference between general impact test and instrumented impact test?

Traditional Charpy impact tests only measure the energy required for the specimen to rupture, but they do not provide a failure mechanism or cause the finished product to fail. Instrumented impact tests provide curves generated by high-speed stress-strain data, through which they can distinguish between toughness and brittle failure, as well as the energy that causes cracks and the energy transferred, and can also give many graphs expressing the subtle differences in the toughness of the specimen. Nowadays, more and more products involve reliability testing, which promotes the development of impact testing in the direction of instrumented impact. 


According to standards: 

ISO 14556:2000 "Steel-Charpy V-notch pendulum impact test-Instrumented test method"; GB/T19748-2005 "Instrumental Test Method for Impact Test of Charpy V-Notch Pendulum for Steel"; 

GB/T3808-2002 "Inspection of Pendulum Impact Tester"; 

GB/T229-2007 "Impact Test Method for Metal Charpy Notch"; 

GB/T18658 "Standard Specimen of Charpy V-Notch for Pendulum Impact Tester"; 

ASTM E23


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