Ultrasonic Non-Destructive Testing

The ultrasonic inspection process begins with selecting an appropriate transducer frequency and applying a couplant to ensure efficient acoustic transmission into the component. During pulse‑echo testing, the transducer emits high‑frequency sound waves that travel through the material and interact with internal boundaries defined by differences in acoustic impedance. At these boundaries, such as interfaces, inclusions, voids, or backwall surfaces, the sound waves are partially reflected and return to the transducer as measurable echoes.

The system records these echoes as time‑dependent amplitude signals (A‑scans), which are calibrated to determine both wave velocity and material thickness. By interpreting the arrival times and amplitudes of the reflected waves, inspectors can pinpoint the location, size, and nature of internal features. Proper calibration and coupling ensure stable conditions for signal transmission, allowing for consistent, high‑resolution detection regardless of internal hollowness or complex geometries. Through this structured evaluation of ultrasonic responses, UT provides a precise and repeatable method for internal material inspection.

• Metals
• Forgings
• Domes
• Thickness measurement
• Standards such as ASTM E317 and AMS 2360 govern this technology.

• High Coverage
• Complex Geometry
• Structural Inspection
• Defined under ASTM E2700

PVA TePla systems provide engineers with a precision metrology platform equipped with high‑frequency transducers (1 – 230 + MHz), stable multi‑axis motion control, and advanced pulser‑receiver and digitizer hardware. This enables high‑resolution acoustic imaging across a wide range of sample sizes and size; small coupons, large panels, complex shapes, ingots, pucks, etc. - using A‑scan, B‑scan, C‑scan, through‑transmission, and time‑of‑flight mapping. The flexibility of acquisition and processing software supports advanced analysis, location mapping, material characterization, and reliable defect detection.

Our solutions are based on robust hardware designed for accurate, repeatable scanning; scalable configurations for R&D through production; industry‑proven reliability; and comprehensive global support from PVA TePla. Whether validating suppliers, optimizing processes, or building a production‑ready inspection workflow, PVA TePla ultrasonic imaging systems offer a trusted, performance‑driven solution for internal quality assurance.

Non‑destructive testing provides an efficient way to evaluate material quality when samples vary in size, geometry, or structural complexity. Instead of focusing on a single defect type, NDT enables multi‑parameter assessment, helping users identify manufacturing variations such as warpage, non‑uniform bonding, or density irregularities across different regions of a component. SAM systems extend this capability with high‑resolution acoustic imaging, allowing detailed inspection of multiple interfaces within layered structures.

Beyond SAM, advanced ultrasonic NDT platforms are designed to accommodate a wide range of part geometries through multi‑axis motion. Systems equipped with rotators, turntables, and gimbal mechanisms can execute complex scanning paths, enabling the inspection of large, curved, or non‑standard shapes such as cylindrical housings, tapered components, or angled assemblies. This flexibility makes ultrasonic NDT a versatile solution for industries requiring precise evaluation of components beyond simple flat samples.

To our SAM Systems