High-precision dynamic-loading fatigue test apparatus

A fatigue test and dynamic loading technology, applied in the field of fatigue test, can solve the problems of measurement accuracy, loss of loading mechanism, complicated operation, etc., and achieve the effects of convenient operation, long life and wide adjustment range.

Inactive Publication Date: 2013-09-25
ZHEJIANG UNIV OF TECH
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Fatigue testing machines can be divided into many types according to different loading methods and application fields, such as commonly used hydraulic and pneumatic equipment, eccentric loading equipment, and lever loading equipment, etc., but because the loading mechanism directly contacts the workpiece to be tested, it will affect the workpiece The influence of an impact force is generated, and the sensor moves wi...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-precision dynamic-loading fatigue test apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] refer to figure 1 , a high-precision dynamic loading fatigue test device, including a permanent magnet 5, an electromagnet 4, a force sensor 3, a mounting bracket wall 2, and a base 1. The workpiece 6 is fixed on the base 1 by a clamping device, the mounting bracket wall 2 is fixed to the base 1, the force sensor 3 is installed on the mounting bracket wall 2, the electromagnet 4 is rigidly connected with the force sensor 3, The permanent magnet 5 is installed on the workpiece 6 to be measured, and the position between the electromagnet 4 and the permanent magnet 5 is relative and there is a set distance, and the set distance is greater than that of the workpiece to be measured during the fatigue test. amplitude.

[0014] Further, the force sensor 3 and the electromagnet 4 can move positions on the mounting bracket wall 2, and the permanent magnet 5 can move co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A high-precision dynamic loading test apparatus comprises a permanent magnet, an electromagnet, a force transducer, an installation support wall and a pedestal; a to-be measured workpiece is fixedly disposed on the pedestal via a clamping device; the installation support wall, which is equipped with the force transducer, is fixedly connected with the pedestal; the electromagnet and the force transducer are in an rigidity connection; the permanent magnet is disposed at the to-be measured workpiece; the electromagnet and the permanent magnet are in opposite positions with a setting distance which is larger than the amplitude of the to-be measured workpiece when in fatigue test. The high-precision dynamic-loading fatigue test apparatus has a loading mechanism with no direct contact with the to-be measured workpiece, is high in measure precision, simple in structure and easy to operate.

Description

technical field [0001] The invention relates to the field of fatigue testing Background technique [0002] The essence of fatigue testing is the process of providing stable periodic loads to target specimens through loading equipment to determine the number of fatigue stress or strain cycles of materials or structures. [0003] Fatigue testing machines can be divided into many types according to different loading methods and application fields, such as commonly used hydraulic and pneumatic equipment, eccentric loading equipment, and lever loading equipment, etc., but because the loading mechanism directly contacts the workpiece to be tested, it will affect the workpiece The influence of an impact force is generated, and the sensor moves with the loading mechanism, and the inertial force of the sensor itself will also affect the measurement accuracy. Moreover, under the high-frequency operation of the fatigue testing machine, the loading mechanism is worn out and the life is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N3/38G01M99/00
Inventor 孙建辉单晓杭周海清
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap