Water immersion ultrasonic microscope (SAM) is a non-destructive testing device that utilizes the characteristic of ultrasonic waves propagating in liquids to perform high-resolution imaging of the internal structure of materials. It is widely used in scenarios that require non-destructive testing, internal defect analysis, or microstructure observation, especially in the semiconductor and electronics industry, materials science and research and development, automotive and aerospace manufacturing, and other fields with important applications.
The immersion ultrasonic microscope emits an ultrasonic beam through an ultrasonic probe, which passes through a liquid coupling medium (usually water) and reaches the upper surface of the workpiece, forming a reflected wave on the upper surface. When the ultrasonic beam passes through the workpiece, it will form different reflected and refracted waves when encountering defects inside the material, such as cracks, gaps, voids, etc. By collecting these waves and analyzing them, ultrasound intensity images of the interior of the material can be obtained, which can accurately determine the location, area, and proportion of defects.
The main configuration of a water immersion ultrasonic microscope includes an industrial computer, acquisition and analysis software, ultrasonic transducer (probe), industrial computer, water circulation system, stainless steel frame structure, and motion module. Among them, the ultrasonic transducer is a key component that determines the frequency of ultrasonic waves, with a frequency range generally between 10MHz and 2000MHz.
Application scenarios
Semiconductor and Electronics Industry: Used for chip packaging inspection, wafer inspection, and electronic component failure analysis. For example, detecting the welding quality between chips and substrates, evaluating the bonding quality of wafers, and detecting internal cracks in passive components such as capacitors and resistors.
Materials Science and R&D: Used for composite material testing, metal and alloy testing, and nanomaterial and thin film analysis. For example, detecting delamination of carbon fiber reinforced polymers, internal defects in metal welded joints, and measuring the thickness of nano coatings.
Automotive and aerospace manufacturing: used for automotive component testing and aerospace structural component testing. For example, detecting casting defects in engine cylinder blocks/heads, blockage of cooling holes in aircraft turbine blades, and impact damage to composite wings.