3 Minutes to Understand Hiwave Scanning Acoustic Microscope
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author：Hiwave
source：Hiwave
time：2025-06-06
catogory：Industry News
Any manufacturer that aims to become an industry giant must continuously update and improve its quality inspection methods.In the past, people used a 2MHz ultrasonic f……
Any manufacturer that aims to become an industry giant must continuously update and improve its quality inspection methods.
In the past, people used a 2MHz ultrasonic flaw detector to determine whether there were defects inside a sample by analyzing the waveform. However, this method was unable to provide more detailed information about the internal welding surfaces of the sample.
High-frequency water immersion ultrasonic C-scan imaging technology has become increasingly popular in the field of non-destructive testing in recent years. Compared to previous inspection methods, it offers more accurate and intuitive results, allowing for a more objective qualitative and quantitative analysis of internal defects. For example, it can measure defects such as tiny welding voids, cracks, delamination, and bubbles, as well as calculate parameters like void area, void ratio, and brazing coverage rate.
Water immersion ultrasonic scanning microscopes are increasingly being adopted as the preferred tool for internal quality control by leading manufacturers.
Next, I will take about three minutes to briefly introduce the basic principles and application areas of the Hiwave ultrasonic scanning microscope by Hiwave.
01 Operating Principle of the Scanning Acoustic Microscope
The scanning acoustic microscope (SAM) is known by various names across different industries: Ultrasonic C-SAM, C-Scan, Immersion Ultrasound Imaging, or Ultrasonic SAT. However, all these terms refer to the same type of equipment used for ultrasonic defect detection.
The scanning acoustic microscope is a non-destructive testing tool based on the physical properties of ultrasound. Since ultrasound travels at different speeds through different media, the transducer emits ultrasonic waves that enter the sample under test via a coupling medium (such as water or silicone oil). When these waves encounter defects such as air pockets, delamination, or cracks, they reflect back with distinct signals.
The ultrasonic transducer captures these unique echoes and sends them to a computer, which converts the data into four different imaging modes. This allows the precise area and location of internal defects within the sample to be determined.
02 Which Industries Require Scanning Acoustic Microscopy?
In short, ultrasonic scanning equipment meets the following three key demands from enterprises:
① Need to Improve Quality Inspection
Traditional inspection methods that only detect external defects, offer low accuracy, or require destructive testing are no longer sufficient for modern production requirements.
② High Product Value
Destructive testing is not suitable for high-value products. Non-destructive testing (NDT) solutions are required.
③ Need to Know the Exact Size and Location of Defects
It is necessary to analyze and quantify defects caused by thermal stress, such as voids, cracks, inclusions, and delamination.
Hiwave, established in 2012, has been deeply involved in the field of ultrasonic testing for many years. Its independently developed Scanning Acoustic Tomography (SAT) equipment meets the diverse testing needs across multiple industries, including:
Chip packaging in the 3C industry
Electronic component packaging
Automotive-grade IGBT modules
Internal defect detection in carbon fiber plates
Welding defect detection in water-cooled plates
Silver contact welding defect detection
Lithium battery infiltration analysis
Diamond compact (PDC) defect and thickness detection
03 What Makes Hiwave’s Scanning Acoustic Microscope Unique?
Hiwave’s domestically developed SAT equipment is specially designed with features tailored for Chinese manufacturers, especially for integration into automated production lines. These include:
① Multi-layer Scanning in One Pass – Efficiently obtain internal imaging of multiple layers within a single sample.
② MES System Interface – Compatible with domestic automated factory systems.
③ Automatic Defect Area and Ratio Calculation – Assists in calculating data such as brazing rate.
④ Modular Big Data Quality Analysis for Batch Products – Enables statistical and trend-based quality evaluation.
⑤ Single Calibration Recipe for Similar Products – Saves time and improves consistency.
⑥ Short Delivery Cycle and Fast Spare Parts Replacement – Domestic R&D equipment with efficient after-sales service.
