ABSTRACT The effect of improving the depth of penetration (ROP) in deep, high‐confining pressure formation is closely related to the rock‐breaking method, which has become a bottleneck restricting the efficient development of oil and gas. Based on the current engineering practice of the Xihu block in the East China Sea Basin, experimental research on ...
Jiwei Li
wiley +1 more source
Rock Dynamic Fracture Characteristics Based on NSCB Impact Method
In 2012, the International Society for Rock Mechanics (ISRM) recommended a new Notched Semicircular Bend (NSCB) method for the determination of dynamic fracture toughness of rock materials, but it did not consider the effect of some uncontrollable ...
Yanbing Wang
doaj +1 more source
Numerical Study of Dynamic Behaviors of Concrete Under Various Strain Rates
As the dynamic behavior of the concrete is different from that under static load, this research focuses on the study of dynamic responses of concrete by simulating the split Hopkinson pressure bar (SHPB) test.
An H.M., Liu L.
doaj +1 more source
Prediction of crack propagation and arrest in X100 natural gas transmission pipelines with the strain rate dependent damage model (SRDD). Part 1:A novel specimen for the measurement of high strain rate fracture properties and validation of the SRDD model parameters [PDF]
A novel specimen for the measurement of strain rate and triaxiality dependent fracture properties of metals is described. The specimen is used in a conventional tensile split Hopkinson pressure bar test.
Oikonomidis, F. +2 more
core +2 more sources
Fracturing behaviors of flawed granite induced by dynamic loadings: A study based on DIP and PFC
This research examines granite's mechanical properties under split‐Hopkinson pressure bar testing, focusing on factors such as grain size and flaw dimensions. The study reveals that tension cracks are prevalent across grain sizes, with most intergrain cracks occurring between feldspar and quartz.
Xiao Wang +5 more
wiley +1 more source
Electromagnetic Interference in Measurements of Radial Stress During Split Hopkinson Pressure Bar Experiments [PDF]
Split Hopkinson pressure bar experiments on soils are often carried out using a rigid steel confining ring to provide plane strain conditions, and measurements of the circumferential strain in the ring can be used to infer the radial stress on the ...
A Tyas +11 more
core +2 more sources
ABSTRACT In this study, we present an application of the image‐based ultrasonic shaking (IBUS) test to characterise viscoelastic properties of bovine cortical bone. This method relies on taking an ultra‐high speed video of a vibrating specimen and the properties are calculated entirely from kinematic data using inertial forces in the specimen as a load
Aleksander Marek +2 more
wiley +1 more source
Dynamic Characterization of Orthogneiss Rock Subjected to Intermediate and High Strain Rates in Tension [PDF]
The dynamic characterization of rocks under intermediate and high strain rates is fundamental to understand the material behavior in case of heavy earthquakes and dynamic events.
Cadoni, Ezio
core
Effect of Loading Rate on Tensile Strength and Fracture Stress of Chocolate
Five different chocolates (extra dark, dark, milk, white, and ruby) were tested using two approaches (low/high‐loading rate) to determine their mechanical behavior. Records of chocolate deformation from a high‐speed camera were presented. Fracture of specimens starts in the middle of the specimen and tensile fracture stress increases with the loading ...
Šárka Nedomová +7 more
wiley +1 more source
NUMERICAL SIMULATION OF SHPB DYNAMIC COMPRESSION TEST OF CONCRETE
Split Hopkinson pressure bar(SHPB) tests are widely used for testing material mechanism behavior under high strain rates,A series of SHPB numerical tests were done based on K&C local concrete damage model,The stress-strain curves of the concrete ...
LI XiaoQin, CHEN BaoQi, DU Xi, DING ZuDe
doaj

