Estimtion of Dynamic Fracture Toughness of reinforced CFRP by Zanchor technology based on strain field around crack tip

2019 ◽  
Vol 2019.94 (0) ◽  
pp. 213
Author(s):  
Wataru SUGIMOTO ◽  
Hironobu TAKAGI ◽  
Takayuki KUSAKA ◽  
Naoki Mori
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Strain Field ◽  
Crack Tip ◽  
Dynamic Fracture Toughness

scholarly journals Experimental Measurement of the Temperature Rise Generated During Dynamic Crack Growth in Metals

1990 ◽  
Vol 43 (5S) ◽  
pp. S260-S265 ◽  
Author(s):  
Alan T. Zehnder ◽  
Ares J. Rosakis
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
High Speed ◽  
Crack Tip ◽  
Dynamic Fracture Toughness ◽  
Plastic Work ◽  
Temperature Fields ◽  
Plastic Strain Rate ◽  
Maximum Temperature ◽  
Large Temperature

During the high speed propagation of cracks, large temperature increases occur at the crack tip due to the intense dissipation of plastic work there. This increased temperature may have a significant effect of the material’s dynamic fracture toughness. An experimental investigation of the temperature fields at the tip of dynamically propagating cracks in 4340 steel was performed using a focused array of high speed, infrared detectors. Temperature fields were measured for cracks growing at speeds from 700m/s to 1900m/s. Maximum temperature increases were as high as 465°C. The temperature fields were differentiated to determine the plastic work rate distribution at the crack tip and to estimate the plastic strain rate. Effects of crack tip heating on dynamic fracture toughness are discussed.

Dynamic fracture toughness (JId) behavior of armor-grade Q&T steel weldments: Effect of weld metal composition and microstructure

2009 ◽  
Vol 15 (6) ◽  
pp. 1017-1026 ◽  
Author(s):  
Govindaraj Magudeeswaran ◽  
Visvalingam Balasubramanian ◽  
S. Sathyanarayanan ◽  
Gankidi Madhusudhan Reddy ◽  
A. Moitra ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Weld Metal ◽  
Dynamic Fracture ◽  
Dynamic Fracture Toughness ◽  
Metal Composition ◽  
Weld Metal Composition
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