| Project Overview

When a coil carrying an alternating current of a certain frequency and amplitude approaches the surface of a conductor, the alternating magnetic field generated by the alternating current in the coil induces eddy currents on and near the surface of the conductor. The magnetic field of the eddy currents reacts back on the coil, and the magnitude of this reaction is related to the electrical conductivity of the surface and near-surface of the conductor. Based on this principle, a standard test block with a known conductivity value can be used to calibrate the eddy-current conductivity meter, and then the true conductivity value of the sample can be directly measured. When the measured conductivity value deviates significantly from the true value due to the size, shape or surface condition of the sample, with the consent of the relevant parties, methods such as sample stacking, comparison between flat and curved surfaces, or removal of surface conditions can be used to obtain the relationship between the true conductivity value and the measured value. Thus, the measured conductivity data can be compensated, and the compensated test result is taken as the true conductivity value.

| Test Objective

1. Evaluating material properties: Electrical conductivity is a key physical property index of aluminum alloys (especially heat-treatable strengthened alloys). It directly reflects the alloying degree, heat-treatment state, uniformity, impurity content/defects of the material.

2. Quality control

3. Material identification and classification

4. Nondestructive testing.

| Testing Standards

YS/T 478, GB/T 12966.

| Service Products / Fields

Automobile, electrical engineering, aerospace, rail transit, metal manufacturing.

| MTT Advantages

1. Professional Team: A team of highly experienced testing engineers and technical experts.

2. Advanced Equipment: Equipped with internationally leading testing instruments to ensure accuracy and reliability of results.

3. Efficient Service: Rapidly respond to customer needs and provide one-stop, high-efficiency inspection services.

4. Authoritative Certification: The laboratory is certified by ISO/IEC 17025, ensuring that test reports have international credibility.