Read：21+
Date：2025-04-28 16:24:30
Author: DTI
Ding Testing & Inspection: Eddy Current Testing (ET), Precisely Detecting Surface and Near-Surface Defects
Eddy Current Testing (ET) is a non-destructive testing technique based on the principle of electromagnetic induction, primarily used for detecting surface and near-surface defects such as cracks, corrosion, and material discontinuities in conductive materials. By inducing eddy currents in conductive materials and detecting changes in these currents, it can quickly and efficiently identify internal structural changes in materials. The eddy current testing services provided by Ding Testing & Inspection are characterized by their high sensitivity, non-contact nature, and compliance with international standards, offering a reliable basis for the assessment of material and structural integrity.
Service Introduction
Eddy Current Testing utilizes the principle of electromagnetic induction. When conductive materials are placed in a changing magnetic field, eddy currents are induced within the material. If there are defects in the material, such as cracks or corrosion, the path of the eddy currents will change, resulting in changes in the magnetic field. By detecting these changes, the location, size, and shape of defects can be determined. This method has a high sensitivity for detecting surface and near-surface defects in conductive materials, and the detection process does not require contact with the object being tested, making it suitable for inspecting complex-shaped workpieces.
Industry Pain Points
-
Ensuring Surface and Near-Surface Quality of Materials: Tiny defects on the surface and near-surface of materials can lead to structural failure or corrosion, thereby affecting the service life and safety of products.
-
Accurate Detection of Surface and Near-Surface Defects: Traditional detection methods often fail to identify minor surface and near-surface defects, a limitation that eddy current testing can effectively address.
-
Meeting Stringent Industry Standards: Industries such as aerospace, automotive, and energy have extremely high requirements for the surface and near-surface quality of materials. Eddy current testing can meet these strict standards to ensure product compliance.
Service Scope
The eddy current testing services provided by Ding Testing & Inspection cover a variety of advanced testing techniques and methods, including:
-
Conventional Eddy Current Testing: Suitable for detecting surface and near-surface defects such as cracks and corrosion in conductive materials.
-
Multi-Frequency Eddy Current Testing: By using electromagnetic signals of multiple frequencies, it can more accurately detect defects at different depths.
-
Phased Array Eddy Current Testing: Utilizing phased array technology, it can achieve comprehensive inspection of complex-shaped workpieces.
-
Pulsed Eddy Current Testing: By detecting with pulsed signals, it can quickly identify material defects and structural changes.
Application Fields
Eddy current testing is widely used in the following fields:
-
Aerospace: Detecting surface and near-surface defects in critical components such as aircraft structural parts and engine blades to ensure flight safety.
-
Automotive Manufacturing: Detecting surface and near-surface defects in automotive parts, such as crankshafts and connecting rods, to enhance the reliability and safety of vehicles.
-
Energy Industry: Detecting surface and near-surface defects in critical components of power generation equipment and pressure vessels to ensure the safe operation of equipment.
-
Petrochemical Industry: Detecting surface and near-surface corrosion in pipelines and storage tanks to prevent leakage accidents.
-
Mechanical Manufacturing: Detecting surface and near-surface defects in various mechanical parts to ensure their machining quality and performance.
Testing Standards
Ding Testing & Inspection strictly follows international and domestic standards to conduct eddy current testing services, ensuring the authority and reliability of the test results. The standards we adhere to include but are not limited to:
-
ISO 17638: Non-destructive testing - Eddy current testing - General principles
-
ASTM E1447: Standard Test Method for Eddy Current Testing
-
GB/T 18891: Non-destructive testing - Eddy current testing - General principles
By following these standards, we can address the following technical issues:
-
Detecting surface and near-surface defects such as cracks and corrosion in conductive materials
-
Assessing the surface and near-surface quality of materials
-
Ensuring the structural integrity of critical components
Why Choose Ding Testing & Inspection?
-
High-Sensitivity Defect Detection: Our eddy current testing techniques can detect minor surface and near-surface defects, ensuring the reliability of the test results.
-
Professional Technical Support and Consulting Services: Our team of experts will provide comprehensive technical support to help you interpret the test results and develop appropriate solutions.
-
Customized Testing Solutions: We offer personalized testing plans tailored to your specific needs, ensuring that the test results meet your requirements.
-
Rapid Testing Services: Our efficient testing processes and professional technical team can quickly complete testing tasks, reducing your testing cycle time.
About Ding Testing & Inspection
Founded by seasoned industry professionals, Ding Testing & Inspection strictly follows international standards such as ISO/ASTM/ASME/JIS/GB/EN/API for testing, inspection, appraisal, and evaluation. We possess world-class non-destructive testing laboratories and have earned recognition from numerous top-tier international and domestic clients. In the field of non-destructive testing, we have a good reputation and client recognition.
Contact Us
Contact Ding Testing & Inspection immediately to let our professional team provide expert-level solutions for your eddy current testing needs. Whether for technical consultation or on-site testing, we will offer you the highest quality service experience.
Get Your Free Testing Plans and Quotation
Ask professional engineers for on-line service, and receive testing proposals within 2 hours.
Six Reasons to choose DTI
Complete qualifications
Complete range of qualification certificatesDTI has CMA, CNAS and other qualifications, including China's domestic and global relatively comprehensive leading qualifications at metal materials and corrosion test field. We can provide authoritative reports of national standard and industrial standard.
Viewing CertificatesProfessional team
70% professional and technical personnelDTI has a professional testing team, with 70% of professional technicians and 70% of undergraduate degree or above. From drafting proposals to sample analysis issuance, we are professional at each step to ensure the precision.
Learn MoreAdvanced Equipment
400 units with a 92% import ratioDTI has invested affluent budgets onto 450 sets of advanced large and medium-sized testing equipment. 92% of the equipment are imported from U.S., Germany, Switzerland, installed at scores of labs cover an area of 8,000 m2 and services cover 1000+ segments.
For DetailsAccurate Data
The accuracy rate of the inspection reaches 99%our professional technical testing team, advanced equipment, large number of databases, and solid implementation of lab quality control, DTI guarantees the overall accuracy rate of the reliable analysis data up to 99%.
consult NowComprehensive Service
One-stop tracking serviceDTI services cover the whole industries and provides the optimal solutions and technical support in terms of cycle time,cost-saving and qualifications based on numerous indicators, E2E supply chain solutions, all-round multi-dimensional product analysis.
Learn MoreCustomer Service
Regular return visits can be re-examinedDTI 24h*7 service (China) is available so that you could reach us anytime, anywhere. We also have an Emergency Service Access in case of special circumstance. DTI visits their customers regularly, and the questionable items in issued reports can be redone free of charge.
Online ServiceOnly Four Steps to Get Your Reports
Issues You May Care About
-
A. DTI has a comprehensive range of instruments and equipment, as well as numerous engineers with over 10 years of experience.
B. We offer consultative services with a broad industry scope, tailoring solutions to meet customer needs.
C. We provide one-stop technical services in the environmental field, with dedicated personnel throughout the process, allowing customers to stay informed about the progress of their reports in real time.
-
A. Normally, we will issue a report within 5-7 working days after receiving the samples.
B. To expedite the report issuance and eliminate extensive manual processing steps, DTI employs collaborative efforts across multiple departments and utilizes automated sample handling technology for certain types of samples, making the reports faster and more accurate.
C. For clients who urgently need the report, expedited services are available.
D. The report issuance time varies depending on the specific type of product, and you can consult with our online customer service for details.
-
DTI’s test data obtained from experiments are all true and valid, and will not maliciously alter or forge test data. The test reports issued by DTI are authoritative and credible and are recognized both in China and other countries.
-
The specific standards vary depending on the testing items. Please consult online customer service for details.
-
Our company promises that all test data obtained from the experiment are true and valid, and will not maliciously alter or falsify the test data. If any customer has any questions about the test data obtained from the experiment, please contact our technical staff, and our company will conduct a free re-inspection for the customer. If the data obtained after the replicated test are the same as the results of the initial test, our company will not change the test results. If they are different from the results of the initial test, our company will conduct multiple experiments on the samples during this period, and finally determine the results. Stable experimental data is used as the final test result.
-
Due to the large amount of standard information and other reasons, many customers may not know what items need to be tested. In this case, we could provide customers with recommendations for related projects, but the customers are required to provide the following information:
One-Stop Solutions Recommended
-
-
Shipbuilding Industry Solutions
-
Wind Power Industry Product Testing Solutions
-
Railway Industry Product Testing Solutions
-
Aerospace Industry Product Testing Solutions
-
Bridges and Steel Structures Product Testing Solutions
-
Laboratory and Research Institution Product Testing Solutions
-
Construction Industry Product Testing Solutions
-
Special Equipment Product Testing Solutions
LEARN ABOUT DING TESTING & INSPECTION
DTI has served thousands of entities, including numbers of Fortune Global 500 enterprises. DTI always conveys trustfulness to the quality life ubiquitously.
DTI is devotional on providing services for metal comprehensive testing. Among the testing services, DTI has more advantage at implementation of various corrosion resistance tests for different type of materials. The range of testing capability includes the analysis of metal composition and metal metallographic, mechanical performance and metal corrosion resistance testing, failure analysis, R & D analysis, and product quality assessment etc.
DTI has been awarded the conformity of assessment from ISO/IEC17025, ISO9001, GB/T28001/OHSAS18001, GB/T14001/ISO14001, CNAS and CMA Certification.
- 30
Industrial Fields
- 200Nos.
Large Equipment
- 3000㎡
Lab Area Size
- 1000Nos.
Customers Served
To be an influential, authoritative, third-party testing organization in China.
We provide professional inspection, testing, analysis for upstream and downstream supply chain of various industries, which covers industrial manufacturing, chemicals, offshore engineering, oil & gas, wind power, hydrogen energy, nuclear power, automotive structures, metals and minerals, equipment manufacturing, construction machinery, aerospace, etc.
We are committed to providing impartial, fair, accurate, and timely professional testing services nearly 20 provinces in China.
Learn more