Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Thin-Walled Hollow Shafts

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...

Bending and Torsional Moments

Bending and Torsional Moments

Bending and torsional moments are two fundamental concepts in structural engineering. They play an important role in understanding the behavior of materials and structures under different loading conditions.
The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...

Torsion of Noncircular Members

Torsion of Noncircular Members

Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...

Torsional Pendulum

Torsional Pendulum

A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played by the...

Deformation in a Circular Shaft

Deformation in a Circular Shaft

One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...

Stress Concentrations in Circular Shafts

Stress Concentrations in Circular Shafts

Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Observation of a mixed close-packed structure in superionic water.

Nature communications·2025

Same author

Type 2 diabetes patients exhibit delayed but coupled bone remodelling, maintaining cortical porosity comparable to healthy controls: A histomorphometric analysis of trans-iliac bone biopsies.

Bone·2025

Same author

Phase transition kinetics of superionic H<sub>2</sub>O ice phases revealed by Megahertz X-ray free-electron laser-heating experiments.

Nature communications·2024

Same author

Spatiotemporal dynamics of fast electron heating in solid-density matter via XFEL.

Nature communications·2024

Same author

Ultrafast time-resolved 2D imaging of laser-driven fast electron transport in solid density matter using an x-ray free electron laser.

The Review of scientific instruments·2023

Same author

Novel experimental setup for megahertz X-ray diffraction in a diamond anvil cell at the High Energy Density (HED) instrument of the European X-ray Free-Electron Laser (EuXFEL).

Journal of synchrotron radiation·2021

Search research articles

Related Experiment Video

Updated: Jun 14, 2026

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

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

Published on: February 11, 2016

Joining and forming using torsional ultrasonic principles.

¹Telsonic UK Ltd, Poole, UK. sales@uk.telsonic.com

Medical Device Technology

|March 23, 2010

Summary

Torsional ultrasonic joining is a versatile technique now employed in various medical device applications, including joining, forming, and selective weakening. This method offers significant benefits for manufacturing and assembly processes in the healthcare industry.

Area of Science:

Materials Science
Mechanical Engineering
Biomedical Engineering

Background:

The medical device industry requires advanced joining and forming techniques.
Traditional methods may have limitations in precision and material compatibility.
Ultrasonic joining offers a non-thermal, efficient alternative.

Purpose of the Study:

To describe the principles and benefits of torsional ultrasonic joining.
To highlight its diverse applications in the medical device sector.
To provide examples of successful implementation.

Main Methods:

Review of torsional ultrasonic joining technology.
Analysis of its application in medical device manufacturing.
Case studies illustrating joining, forming, and selective weakening processes.

More Related Videos

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Published on: March 7, 2018

Related Experiment Videos

Last Updated: Jun 14, 2026

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

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

Published on: February 11, 2016

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Published on: March 7, 2018

Main Results:

Torsional ultrasonic joining is applicable to a wide range of medical device tasks.
The technique enables precise control over joining, forming, and material weakening.
Examples demonstrate its efficacy in complex medical device assembly.

Conclusions:

Torsional ultrasonic joining is a valuable technology for the medical device industry.
Its versatility supports innovation in device design and manufacturing.
Further adoption can lead to improved product quality and efficiency.