Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

638
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
638
Fatigue01:21

Fatigue

957
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
957
Screw: Problem Solving01:21

Screw: Problem Solving

758
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
758
Mechanical Characteristics of Steel01:18

Mechanical Characteristics of Steel

1.2K
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
1.2K
Normal Strain under Axial Loading01:20

Normal Strain under Axial Loading

1.4K
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
1.4K
Plastic Deformations01:19

Plastic Deformations

552
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
552

You might also read

Related Articles

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

Sort by
Same author

Impact of integrating Quality Control Circle, Disease-Specific Care Certification and Enhanced Recovery After Surgery on perioperative outcomes in joint replacement.

BMJ open quality·2026
Same author

SPEND-hSRS imaging of fumarate uncovers mitochondrial metabolic heterogeneity.

bioRxiv : the preprint server for biology·2026
Same author

Shedding new light on the hidden complexity of seeds: chemically selective imaging of seed coats with stimulated Raman scattering microscopy.

The Analyst·2025
Same author

Optimization of operating parameters for 2,5-furandicarboxylic acid recovery using electrodialysis with bipolar membrane and traditional electrodialysis systems.

Heliyon·2024
Same author

Persistent Mesodermal Differentiation Capability of Bone Marrow MSCs Isolated from Aging Patients with Low-Energy Traumatic Hip Fracture and Osteoporosis: A Clinical Evidence.

International journal of molecular sciences·2024
Same author

The Effect of the Energy Release Rate on the Local Damage Evolution in TRIP Steel Composite Reinforced with Zirconia Particles.

Materials (Basel, Switzerland)·2023
Same journal

Impact of osteoporosis on outcomes following ankle open reduction and internal fixation.

Injury·2026
Same journal

Cumulative traumatic life events and increased risk for emergency department and inpatient utilization after physical injury hospitalization.

Injury·2026
Same journal

Advances in the management of chest wall injuries - Influence of new technical options.

Injury·2026
Same journal

Trauma nursing as frontline health diplomacy: A binational ATCN program for Palestinian and Israeli nurses during conflict.

Injury·2026
Same journal

Corrigendum to "Neutralizing the odds: Biomechanical protection by adiposity offsets physiological burden to explain the trauma.'obesity-paradox`" [Injury 57 (2) (2026) 112913].

Injury·2026
Same journal

Agreement between ChatGPT and emergency physicians in laceration management: A prospective study.

Injury·2026
See all related articles

Related Experiment Video

Updated: Mar 14, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

926

Notch sensitivity jeopardizes titanium locking plate fatigue strength.

Wo-Jan Tseng1, Ching-Kong Chao2, Chun-Chin Wang2

  • 1Department of Orthopedics, National Taiwan University Hospital, Hsinchu Branch, Taiwan; College of Biological Science and Technology, National Chiao Tung University, Hsinchu City, Taiwan.

Injury
|October 9, 2016
PubMed
Summary
This summary is machine-generated.

Titanium alloy locking plates show higher strength but may have compromised fatigue life due to screw threads. Non-threaded screw holes (type III) generally offer better fatigue performance in these orthopedic implants.

Keywords:
Locking plateNotch sensitivityStainless steelTitanium

More Related Videos

Ultrasonic Fatigue Testing in the Tension-Compression Mode
06:54

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Published on: March 7, 2018

11.3K
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
11:51

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

16.0K

Related Experiment Videos

Last Updated: Mar 14, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
07:42

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

926
Ultrasonic Fatigue Testing in the Tension-Compression Mode
06:54

Ultrasonic Fatigue Testing in the Tension-Compression Mode

Published on: March 7, 2018

11.3K
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
11:51

An Improved Mechanical Testing Method to Assess Bone-implant Anchorage

Published on: February 10, 2014

16.0K

Area of Science:

  • Orthopedic biomechanics
  • Biomaterials science
  • Mechanical engineering

Background:

  • Titanium alloy locking plates are susceptible to fatigue failure due to notch sensitivity.
  • Limited head-to-head comparisons exist between stainless steel and titanium alloy locking plates.

Purpose of the Study:

  • To compare the bending stiffness, bending strength, and fatigue life of stainless steel and titanium alloy locking plates.
  • To evaluate the impact of screw-hole design on the mechanical performance and fatigue strength of locking plates.

Main Methods:

  • Custom-designed locking plates made from stainless steel (F138, F1314) and titanium alloy.
  • Comparison of three screw-hole designs: type I (threaded, angled edges), type II (threaded, chamfered edges), and type III (non-threaded, chamfered edges).
  • Mechanical testing (static loading, fatigue life) and finite element analysis (FEA) for stress concentration assessment.

Main Results:

  • Titanium plates exhibited superior bending strength (2.95:1.56:1 ratio) compared to stainless steel plates (F138, F1314).
  • Non-threaded screw holes (type III) demonstrated the highest fatigue life across all materials, followed by type II and type I.
  • While type III titanium plates outperformed F138 counterparts, type I and II titanium plates had significantly lower fatigue lives. All F1314 plate types surpassed type III titanium plates in fatigue life.
  • FEA indicated minimal stress differences between type II and III screw holes, with both showing lower stress concentrations than type I.

Conclusions:

  • Screw threads in locking plates do not appear to cause significant stress concentration via FEA.
  • Screw threads may compromise fatigue strength, particularly in notch-sensitive titanium alloy plates.
  • Optimized locking plate design, potentially utilizing non-threaded screw holes, is crucial for enhancing fatigue performance in orthopedic implants.