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Charpy Impact Testing Machine

Jinan Kason: Leading Professional Charpy Impact Testing Machine Manufacturer and Supplier in China

We have specialized in developing and manufacturing metal, non-metal and composite material testing equipment for many years and have served customers from more than 150 countries and regions. As a professional testing equipment factory, our advantages are specifically reflected in

Complete Production Facilities

Our company has production and office facilities such as scientific research office building, electrical installation and commissioning building, final assembly workshop, heavy machine workshop, machining workshop, blanking workshop, painting workshop, measuring room, product showroom, etc.

Diverse Product Types

Our main products include hydraulic universal testing machines, electronic universal testing machines, compression testing machines, spring testing machines, impact testing machines, torsion testing machines, hardness testers, and testing machine accessories.

Rich Service Experience

Our products are exported to international markets such as Germany, the United States, Spain, Australia, Italy, South Africa, South Korea, Pakistan, Malaysia, Thailand, and Singapore. We have a professional pre-sale, sales and after-sales service team to provide strong technical support and professional services to domestic and foreign users.

Professional Qualification Certification

Our company has successfully passed ISO9001 quality system, ISO14000 environmental management system, occupational health and safety management system, and CE certification. The company has obtained a total of 22 authorized national patents, including 2 national invention patents, 13 national utility model patents, and 7 national design patents.

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Brief Introduction to Charpy Impact Testing Machines

 

 

Charpy impact testing machines are one of the most commonly used testing devices used to determine the amount of force absorbed by a material when it reaches its breaking point. They have a pendulum of known length and mass. With Charpy impact testing, users can easily analyze the strength of materials. Quantitative results from testing can help understand the amount of force a material can absorb when it reaches the point of breakage or failure. Qualitative results from the testing procedure can provide information about the ductility of the material being tested.

 

Main Parts of Charpy Impact Testing Machines

 

Digital Vickers Hardness Tester

Pendulum

A pendulum is an oscillating weight that acts as the impact element during impact testing. It is usually a heavy metal arm of specified mass and length. The pendulum is raised to a specific height and released to impact the test sample.

Time Pen Type Leeb Hardness Tester

Striking Edge

The pendulum is equipped with a striking edge, also called a hammer or striker. This edge contacts the test specimen and transmits impact forces during the test. Impact edges are typically made of hardened steel to ensure consistent and accurate results.

HBX-0.5 Portable Brinell Hardness Tester

Anvil

An anvil is a solid support or base on which a test specimen is placed. It provides stability and a fixed reference point for impact testing. The anvil is designed to withstand impact without deforming.

5300 Touch Screen Leeb Hardness Tester

Sample Rack

The sample holder or clamping mechanism holds the specimen in a fixed position during the impact test. It ensures that the sample is properly aligned and positioned for accurate impact force application.

 

Knoop Micro Hardness Tester

Depth Scale

The release mechanism is responsible for releasing the pendulum and allowing it to swing freely to impact the test specimen. It can be operated manually or automatically, depending on the design of the Izod impact testing machine.

Automatic Brinell Hardness Tester

Release Mechanism

The release mechanism is responsible for releasing the pendulum and allowing it to swing freely to impact the test specimen. It can be operated manually or automatically, depending on the design of the Izod impact testing machine.

Fully Automatic Digital Rockwell Hardness Tester

Measurement and Display Systems

Charpy impact testing machines are equipped with measurement and display systems to capture and display test results. The system may include a digital display showing the amount of energy absorbed by the sample during impact. Some testers also offer the ability to capture and store test data for further analysis.

Steel Plate Bending Testing Machine

Security Features

Charpy impact testing machines often have safety features to protect the operator during testing. This may include safety guards or enclosures to prevent contact with moving parts, emergency stop buttons, and other safety mechanisms to ensure safe operation.

 
Benefits of Charpy Impact Testing Machines

Help Test Samples

By testing samples from different batches or suppliers, these Charpy impact testing machines can identify any changes in material properties and make informed decisions about whether the material is suitable for a specific application.

Improve Product Safety

Engineers can evaluate how a material behaves under unexpected loading conditions by subjecting it to controlled impact forces. This information helps to design structures or components that can withstand potential impacts, thereby ensuring the safety of workers and the public.

Ensure Products Meet Standards

Using a Charpy impact testing machine, manufacturers can comply with these standards by providing quantitative data on a material's toughness and impact resistance. Complying with these standards ensures that products meet the necessary standards of safety and reliability.

Save Unnecessary Expenses

Charpy impact testing machine optimizes material selection and avoids unnecessary expense due to over-engineering or underperforming materials. Additionally, identifying material weaknesses or defects early in the testing process can prevent costly failures or recalls.

Charpy Impact Testing Machines Parameters (Take Plastic Material Charpy Impact Testing Machine as an Example)
Display Touch screen
Impact velocity 2.9m/s 3.8m/s
Impact energy (0.5J), 1J, 2J, 4J, 5J 7.5J, 15J, 25J, 50J
Impact center distance 230mm 395mm
Pendulum angle 150° 150°
Radius of striking edge R=2±0.5mm R=2±0.5mm
Radius of jaw R=1±0.1mm R=1±0.1mm
Inclined angle of striking edge 30±l° 30±l°
Energy display resolution 0.01J 0.01J
Jaw support spacing 40, 60, 62, 70mm 40, 60, 70, 95mm
Dimensions 420×260×630mm 460×330×745mm
Output method Printout
Power 220V,50Hz

 

Hydraulic Bending and Re-bending Testing Machine

Types of Impact Testing

Four types of impact testing, including pendulum, falling weight, and dynamic tearing, are described in detail below:

Charpy

The Charpy impact test, also known as the V-notch test, is an impact test in which a weighted pendulum is released from a specified height and strikes the part. A Charpy impact testing machine is a device with a pendulum with multiple locking points at a specified height and a clamp that holds the specimen, used to determine Charpy impact strength. Charpy impact testing is most commonly used on ductile materials such as metals and thermoplastics. This test can be performed at different temperatures and is often used to determine the ductile-to-brittle transition temperature of a material.

Izod

The Izod impact test is similar to the Charpy test in that a weighted pendulum is used to impact a specimen containing a V-shaped notch. The Izod impact testing machine is used to measure the Izod impact strength. The test procedure for the cantilever test is otherwise identical to the Charpy test. First prepare the test sample and install it into the machine. The pendulum is then raised to a specified height and released to strike the upper end of the sample. Izod testing is governed by ASTM D256 and is most commonly used for thermoplastics. However, it can also be used on metals. Like the Charpy test, the Izod test is used to determine the toughness of a material and its ductile-to-brittle transition temperature.

Drop Weight Impact Test

The drop weight impact test, also known as the Perini test, uses a weight suspended from a simply supported horizontal specimen and then dropped to create an impact. The test piece in the drop weight impact test has a notch, and a heavy object falls on the surface opposite to the notch. Like the other impact tests described previously, the drop weight impact test is often used to test the ductile to brittle transition temperature of a material.

Dynamic Tear Test

The dynamic tear test is similar to the drop weight impact test. In the dynamic tear test, the notched test specimen is supported only at both ends. Drop the heavy object on the surface opposite to the notch side, so that the test piece is subjected to bending impact load and three-point bending. The main difference between the drop weight impact test and the dynamic tear test is that the dynamic tear test is usually used on specimens less than 5/8-inch-thick, while the drop weight impact test is used on specimens thicker than 5/8 inch.

 
Standard Operating Procedure to Perform the Test Using Charpy Impact Tester

The general steps to perform the lzod or Charpy impact test are as follows

1.Sample Preparation

Cut standardized specimens of the material to be tested in accordance with relevant standards. The specimen should have a notch to create a stress concentration point where fracture will occur during testing.

2. Set up Test

Secure the sample in the impact tester's clamp, making sure it is properly aligned and perpendicular to the direction of impact. Adjust the pendulum height and angle according to standard requirements.

3. Calibrate the Machine

Make sure the impact tester is calibrated correctly and that the pendulum has the correct energy level for the test.

4. Start Experimenting

Raise the pendulum to the appropriate height, release it, and allow it to impact the specimen. The impact will cause the specimen to break and the pendulum will continue to swing upward.

5. Measurement Results

A measure of the energy absorbed by a specimen during fracture, usually recorded in joules per meter. Repeat the test several times and take the average.

6. Result Analysis

Compare test results to relevant standard requirements or material specifications. Evaluate the toughness of a material and determine whether it meets the necessary standards for its intended application.

7. Record Results

Document test results in a report, including sample information, test conditions, and results obtained.

Typical Application of Charpy Impact Testing Machines
 

Aerospace

The aerospace industry uses these Charpy impact testers to measure the impact resistance of various materials used in aircraft components such as wings and fuselages.

 

Automotive

The automotive industry uses these Charpy impact testers to evaluate the impact resistance of materials used to make automotive parts such as bumpers and body panels.

 

Construction

The construction industry uses these Charpy impact testers to measure the impact resistance of building materials such as concrete and steel.

 

Manufacturing

Manufacturers use these Charpy impact testing machines to ensure the quality and reliability of materials used in the production of consumer goods such as appliances and electronics.

 

Military and Defense

The military and defense industries use these Charpy impact testing machines to evaluate the impact resistance of materials used in the manufacture of vehicles, armor and other equipment.

 

Research And Development

Researchers and engineers use these Charpy impact testing machines to develop and test new materials for a variety of applications, such as sports equipment, medical equipment, and industrial machinery.

 
Our Certifications

 

Our company has obtained the following certificates

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Factory Pictures

 

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FAQ

Q: What is an impact testing machine?

A: An impact testing machine is used to determine the resistance of a material or component to a rapid load under varying temperature conditions. Depending on the material to be tested, the end-use application requirements, and the preferred type of test data, a choice is made between pendulum impact testers and drop weight impact testers. As their respective names suggest, specimens are either struck by a swinging pendulum or hit by a falling weight. In each case, the weight, the release height or drop height, and the type of striking hammer or tool that impacts the specimen are pre-defined, and the machine is set up accordingly.

Q: What is the difference between a non-instrumented and instrumented impact testing machine?

A: In a conventional impact test (not instrumented), the amount of energy absorbed by the specimen during fracture is calculated by comparing the difference of the height of the pendulum before and after the fracture. An instrumented impact test measures the force during impact, provides high-speed stress/strain data that differentiates between ductile and brittle failure and provides information on fracture mechanical characteristics.

Q: What is the importance of simply supported beam impact testing?

A: Charpy impact testing is important because it provides engineers with comparative results on the impact strength of various materials. When a material is tested over a range of temperatures, the DBTT (ductile to brittle transition temperature) can be plotted on a graph, allowing engineers to understand at what temperature a typically ductile (i.e. tough) material becomes brittle.

Q: How to calculate Charpy impact test?

A: The results of the Charpy impact test essentially refer to energy balance. These terms include the potential energy before the test (i.e., the weight of the pendulum at a certain height above the sample) and the potential energy remaining after the pendulum has passed through the sample and moved to a new height above the sample. This energy difference is expressed in joules (J) and refers to the energy absorbed by the sample during the fracture process.

Q: What are the units of simply supported beam impact test?

A: Charpy impact test results are measured in joules, which is the SI unit of energy. This is simply the work done by a 1 Newton force pushing the sample 1 m in the direction of the force. This value can be used to calculate the impact energy in J/m2 by dividing the Joule value by the sample cross-sectional area at the sample notch.

Q: What is Charpy impact test standard?

A: Charpy impact testing can be performed to a variety of standards. However, the most common are ASTM E23, ASTM A370, and ISO 148-1. ASTM A370 focuses only on steel, while ASTM E23 and ISO 148-1 apply to metallic materials in general.

Q: What is the temperature for a simply supported beam impact test?

A: The standard temperature for Charpy impact testing is 23 degrees Celsius. However, these tests are typically performed over many different temperature ranges to map the material's ductile-to-brittle transition temperature.

Q: What are the two types of results given by the Charpy impact testing machine?

A: There are two types of results generated by performing a Charpy impact test: quantitative results and qualitative results.

Q: What is the use of Charpy impact testing machine?

A: Charpy impact testing machines are used to determine a variety of properties, such as the impact energy of a sample, whether the material exhibits ductile or brittle behavior, and the temperature at which the material transitions between ductile and brittle failure modes.

Q: What are the factors that affect the results of Charpy impact testing machine?

A: Charpy impact testing machines may be affected by many factors, the most important four being: material yield strength, V-notch or U-notch, temperature, and fracture mechanism.

Q: What are the results of Charpy impact testing of high-strength materials?

A: High tensile strength materials like tungsten have relatively low impact strength because they are very brittle.

Q: What are the Charpy impact test results for low-strength materials?

A: Low tensile strength materials, such as mild steel, generally have higher toughness because they can absorb more energy without cracking and are more ductile.

Q: What is the difference between Charpy impact testing machine and Izod impact strength testing machine?

A: The main difference between a Charpy impact testing machine and an IZOD impact testing machine is the way the sample is secured. For the Charpy test, the sample is supported on both sides and a pendulum strikes the middle of the sample. In the IZOD test, the sample is supported on only one side, i.e. in a cantilevered structure, and a pendulum strikes the sample on the other side.

Q: Are Charpy impact testers important in 3D Printing?

A: Yes, Charpy impact testing machines can help engineers determine the impact strength of various 3D printing materials, especially considering that some technologies print parts with anisotropic properties.

Q: What type of machine is used to test the impact strength of a plastic?

A: Charpy Impact Tester. It is a lab testing machine which is designed for the calculation of the resistance of impact to metals and plastics.

Q: What is ASTM Charpy impact test standard?

A: ASTM standard Charpy Impact Test specimen consist of a bar of metal, or other material, 55x10x10mm having a notch machined across one of the larger dimensions. The Charpy Impact Test consist of striking a suitable specimen with a hammer on a pendulum arm while the specimen is held securely at each end.

We're well-known as one of the leading charpy impact testing machine manufacturers in China. Please rest assured to buy high quality charpy impact testing machine for sale here from our factory. For price consultation, contact us.

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