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Related Concept Videos

Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
Bending of Curved Members - Strain Analysis01:14

Bending of Curved Members - Strain Analysis

The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member is the...

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Related Experiment Video

Updated: May 10, 2026

Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing
08:40

Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing

Published on: February 11, 2016

An ultrasonic inspection method for diffusion-welded components with variable curvature and thickness.

Lichen Teng1, Wenmin Chu2

  • 1Beijing Research Institute of Automation for Machinery Industry Co., Ltd., Beijing, 100032, China. tenglch@riamb.ac.cn.

Scientific Reports
|May 8, 2026
PubMed
Summary

Automated ultrasonic testing for complex curved components is now reliable. This new laser-ultrasonic method adapts scanning paths for unknown surfaces, improving defect detection in diffusion welds.

Keywords:
Complex diffusionDiffusion bonding defectsUltrasonic testingVariable curvatureVariable thickness

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Last Updated: May 10, 2026

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Area of Science:

  • Materials Science
  • Robotics
  • Non-Destructive Testing

Background:

  • Automated ultrasonic inspection of diffusion welds with variable curvature and thickness is difficult.
  • Challenges include focusing on curved interfaces, detecting small defects, and the absence of accurate CAD models.

Purpose of the Study:

  • To develop a reliable methodology for automated ultrasonic inspection of complex curved diffusion-welded components.
  • To address challenges posed by variable geometry and lack of precise surface data.

Main Methods:

  • Developed an integrated system combining laser profile scanning and multi-axis robotic ultrasonic testing.
  • Resolved synchronization issues between surface data, ultrasonic signals, and robot motion.
  • Generated adaptive scanning trajectories based on laser profiles for unknown curved surfaces.
  • Utilized ultrasonic field simulations to optimize transducer parameters and analyze geometric effects on defect detection.

Main Results:

  • Successfully conducted multi-axis robotic C-scan experiments on titanium alloy diffusion-welded curved blade specimens.
  • Demonstrated effective detection of internal defects in complex curved diffusion welds.
  • Achieved improved inspection stability and reliability through the proposed methodology.

Conclusions:

  • The integrated laser-ultrasonic approach provides a reliable method for automated inspection of complex curved diffusion-welded components.
  • The system effectively synchronizes multi-source data and enables adaptive scanning on surfaces with unknown geometry.
  • This methodology enhances the feasibility of non-destructive evaluation for challenging industrial applications.