Key Takeaways
- Scanning Acoustic Microscopy (SAM) is a non-invasive and non-destructive quality control tool for inspecting internal structures in materials.
- SAM uses high-frequency ultrasound to detect defects such as cracks, voids, and delaminations without damaging components.
- The effectiveness of SAM relies on a combination of high-performance transducers, digitisers, and software.
- Advanced SAM systems can detect defects as small as 50 microns, making them essential for industries like electronics, aerospace, and advanced materials.
Introduction to Scanning Acoustic Microscopy
Scanning Acoustic Microscopy (SAM) is a powerful tool for quality control, ensuring the structural integrity and reliability of components in various industries, including electronics, aerospace, and advanced materials. By using high-frequency ultrasound, SAM can inspect and characterise internal features of materials, detecting defects that could compromise performance.
Optimising SAM with Critical Components
The effectiveness of SAM relies on a combination of high-performance components, including transducers, digitisers, and software. These components work together to provide accurate and detailed images of internal structures, allowing manufacturers to detect defects and flaws that could have gone undetected.
Transducers, Digitisers, and Software: A Comparison
| Component | Description | Specifications |
|---|---|---|
| Transducers | Convert electrical signals into ultrasound waves | Frequency range: 10-100 MHz, Resolution: up to 50 microns |
| Digitisers | Convert ultrasound waves into digital signals | Sampling rate: up to 100 MS/s, Resolution: 12-16 bits |
| Software | Processes digital signals to create images and analyse data | Algorithms: advanced signal processing and image reconstruction, Compatibility: various operating systems |
Industry Applications
SAM is essential for various industries, including:
- Electronics: inspecting microchips, bonded wafers, and underfills
- Aerospace: identifying subsurface flaws in lightweight composites or high-performance alloys
- Advanced materials: verifying adhesion quality and detecting fatigue or internal corrosion in metals and composites
According to Hari Polu, President of OKOS, advanced SAM systems can detect defects as small as 50 microns, making them indispensable for industries where failure is not an option.
Bottom Line
In conclusion, Scanning Acoustic Microscopy (SAM) is a powerful quality control tool that relies on a combination of high-performance transducers, digitisers, and software to provide accurate and detailed images of internal structures. With its ability to detect defects as small as 50 microns, SAM is essential for industries like electronics, aerospace, and advanced materials, where structural integrity and reliability are critical. By selecting and integrating the right components, manufacturers can unlock the full power of SAM and ensure the quality and performance of their products.