Blog

Ultrasonic Flaw Detection for Railway Rail Welds: Standard Procedure, Defect ...

Rail welds are the weakest structural segments of railway track systems. Flash butt welding, thermite welding and gas pressure welding are the three mainstream rail connection processes. Weld disconti

Welding Visual Inspection: Standard Procedure, Acceptance Criteria and Defect...

Visual Inspection (VI) is the first and most fundamental step of welding quality control. As a primary non-destructive testing method, it covers full pre-welding, in-process and post-welding inspectio

Material Structure and Mechanical Properties: Mechanism, Correlation and Engi...

Mechanical properties are the core service indicators that determine the load-bearing capacity, deformation resistance, fatigue durability and failure safety of engineering materials. All macroscopic

Judgment Criteria and Technical Specification for Validity of Tensile Test Data

Tensile test is the most fundamental and authoritative method for evaluating mechanical properties of metallic and non-metallic materials, which obtains core indexes including yield strength, tensile

Judgment Criteria and Technical Specification for Validity of Tensile Test Data

Tensile test is the most fundamental and authoritative method for evaluating mechanical properties of metallic and non-metallic materials, which obtains core indexes including yield strength, tensile

Intelligent Ultrasonic Non-Destructive Testing Technology: Principle, System ...

Traditional ultrasonic testing (UT) relies heavily on manual operation, inspector experience and subjective waveform judgment, resulting in inconsistent detection repeatability, low efficiency and hig

Hardness Testing Selection Guide for Metallic Materials: Brinell, Rockwell an...

Hardness is a comprehensive mechanical property that reflects metallic materials’ resistance to plastic deformation, indentation, wear and surface damage. Hardness testing is the most conventional, ef

Coating Adhesion Test by Cross-Cut Method: Test Procedure, Level Classificati...

Coating adhesion is the most critical fundamental indicator for evaluating the bonding performance of anti-corrosion paint, powder coating and protective film on metal substrates. Poor adhesion will c

Test Method for Vertical Compressive Static Load Test of Single CFG Pile

CFG pile (Cement-Fly ash-Gravel pile) is a typical rigid composite foundation reinforcement body, widely applied in high-rise building foundations, municipal road subgrades, industrial plant foundatio

When Does a Salt Spray Test Count as Passed: A Complete Technical Explanation

Salt spray test is one of the most widely‑used accelerated corrosion test methods for coated metals, plating layers and surface‑treated components, implemented per ISO 9227, ASTM B117 and GB/T 10125‑2

How Long Does 24‑Hour Salt Spray Test Equate to Natural‑Environment Exposure:...

Salt spray test (NSS per ISO 9227, ASTM B117) is the most widely‑used accelerated corrosion test for metal substrates, electroplated layers and organic coating systems. A very frequent technical quest

Standardization of Common On-Site Entity Inspection for Construction Engineering

On-site entity inspection serves as the core technical means to verify the actual construction quality of building and infrastructure projects. Different from material incoming inspection and process