Study on the Effect of Cl- Concentration on the Corrosion Fatigue Damage in a Rolled AZ31B Magnesium Alloy by Acoustic Emission

2007 ◽  
Vol 353-358 ◽  
pp. 327-330 ◽  
Author(s):  
Hua Mao Zhou ◽  
Jian Qiu Wang ◽  
Qi Shan Zang ◽  
En Hou Han
Keyword(s):  
Acoustic Emission ◽  
Magnesium Alloy ◽  
Energy Release ◽  
Fatigue Damage ◽  
Corrosion Fatigue ◽  
Room Temperature ◽  
Fatigue Performance ◽  
Ae Energy ◽  
Magnesium Alloy Az31b ◽  
Wrought Magnesium Alloy

The fatigue performance of one widely used wrought magnesium alloy AZ31B in rolled form was studied using acoustic emission (AE). AE energy release during corrosion fatigue (CF) testing was measured at room temperature. It is found that AE energy release can express corrosion fatigue damage experienced by the material.

MAGNESIUM AZ31B

Alloy Digest ◽  
1962 ◽  
Vol 11 (9) ◽  
Keyword(s):  
High Temperature ◽  
Magnesium Alloy ◽  
Physical Properties ◽  
Room Temperature ◽  
Heat Treating ◽  
General Purpose ◽  
Bearing Strength ◽  
Temperature Performance ◽  
Wrought Magnesium Alloy ◽  
Metal Products

Abstract Magnesium AZ31B is a general purpose wrought magnesium alloy for room temperature service. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bearing strength as well as creep. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Mg-53. Producer or source: The Dow Metal Products Company.

Formability of Magnesium Alloy AZ31B from Room Temperature to 125 °C Under Biaxial Tension

2017 ◽  
pp. 661-667
Author(s):  
Isaac Chelladurai ◽  
Andrew Orme ◽  
Mike P. Miles ◽  
David T. Fullwood ◽  
John E. Carsley ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Room Temperature ◽  
Biaxial Tension ◽  
Magnesium Alloy Az31b

Acoustic emission measurements and lattice simulations of microfracture events in spruce

Holzforschung ◽  
2010 ◽  
Vol 64 (4) ◽  
Author(s):  
Edwin Nagy ◽  
Eric N. Landis ◽  
William G. Davids
Keyword(s):  
Acoustic Emission ◽  
Fracture Energy ◽  
Energy Release ◽  
Lattice Model ◽  
Failure Modes ◽  
Mechanical Damage ◽  
Peak Strain ◽  
Cumulative Energy ◽  
Ae Energy ◽  
Total Fracture

Abstract A statistical lattice model was developed to investigate the energy associated with damage and failure of wood. The model incorporates several important morphological aspects of wood such as grain direction, early wood percentage and grain geometry. The model was developed to investigate progressive damage under enforced boundary displacements and has been adapted to predict fracture energy related phenomena. In this particular study, notched specimens were loaded in uniaxial tension while monitored by a passive acoustic emission (AE) measurement system. The energy associated with the mechanical damage was measured by the AE instruments and compared with the energy released by ruptured elements in the lattice model. Cumulative energy release was tracked as a function of specimen load and deformation in both model and experiment. A ratio was established between the cumulative AE energy released at the first drop in load and the cumulative fracture energy released when the model load-deformation relationship becomes significantly non-linear. An additional ratio was established between the total fracture energy measured prior to 50% of peak strain and the total fracture energy measured prior to peak strain. The magnitudes of these energy release ratios vary owing to a change in failure modes between the short model and the larger specimens; however, the shape of the AE energy release curve up to failure coincides well with that predicted by the model simulations.

Development of a Binary Zn-Based Solder Alloy for Joining Wrought Magnesium Alloy AZ31B

2012 ◽  
Vol 22 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Li Ma ◽  
Weimin Long ◽  
Peixin Qiao ◽  
Dingyong He ◽  
Xiaoyan Li
Keyword(s):  
Magnesium Alloy ◽  
Solder Alloy ◽  
Magnesium Alloy Az31b ◽  
Wrought Magnesium Alloy

Mechanical Properties and Microstructure of AZ31 Magnesium Alloy under Uni-Axial Tensile Loading

2011 ◽  
Vol 686 ◽  
pp. 219-224 ◽  
Author(s):  
Xiao Yu Zhong ◽  
Guang Jie Huang ◽  
Fang Fang He ◽  
Qing Liu
Keyword(s):  
Mechanical Properties ◽  
Elevated Temperature ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Alloy Sheet ◽  
Strain Rates ◽  
Axial Tensile ◽  
Magnesium Alloy Az31b ◽  
Plastic Deformation Behavior ◽  
Electron Back Scattered Diffraction

Uni-axial tensile plastic deformation behavior of rolled magnesium alloy AZ31B under the temperature range from room temperature(RT) to 250°C with strain rates between 10-3 and 10-1s-1 has been systematically investigated. Microstructure evolution and texture were determined using optical microscopy (OM) and electron back-scattered diffraction (EBSD) techniques, respectively. Our results indicated that the strength and elongation-to-fracture were more sensitive to strain rates at elevated temperature rather than that at room temperature; dynamic recrystallization (DRX) and relaxation of stress at elevated temperature resulted in dramatic change of mechanical properties. Compared with strain rate, the temperature played a more important role in ductility of AZ31B Mg alloy sheet.

Evaluation of Fatigue Damage in Reinforced Concrete Road Slabs by Acoustic Emission

2018 ◽  
Author(s):  
Takahiro Arai ◽  
Minoru Iwai ◽  
Kosuke Furuichi
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Fatigue Damage ◽  
Continuous Monitoring ◽  
Live Load ◽  
Rc Structures ◽  
Damage Degree ◽  
Ae Energy ◽  
Deck Slabs ◽  
Deck Slab

Since reinforced concrete (RC) deck slabs are usually damaged by cyclic live load, it is necessary to monitor the deck slab for operation and maintenance purposes. Acoustic emission (AE) is an excellent technique, which can be used for continuous monitoring and detecting fatigue damages of RC structures. First, the AE was applied for evaluating fatigue damage of RC deck slab with truck wheel traveling test in laboratory. The results showed that there was a correlation between the AE energy and damage degree of the slab. Thus, it was able to presume the damage degree by AE energy. In the next step, a test by vehicle with clear mass in a in‐service bridge was performed. The results of the laboratory and in‐service bridge tests imply that the damage degree of RC deck slab are able to evaluate by AE energy.

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