Fracture Behaviour of a High Tension Bolt Material

Author(s):  
R. K. Pandey ◽  
A. Mishra ◽  
T. N. C. Vijaigovind ◽  
A. J. Singh
2010 ◽  
Vol 24 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Miroslaw Wyczesany ◽  
Jan Kaiser ◽  
Anton M. L. Coenen

The study determines the associations between self-report of ongoing emotional state and EEG patterns. A group of 31 hospitalized patients were enrolled with three types of diagnosis: major depressive disorder, manic episode of bipolar affective disorder, and nonaffective patients. The Thayer ADACL checklist, which yields two subjective dimensions, was used for the assessment of affective state: Energy Tiredness (ET) and Tension Calmness (TC). Quantitative analysis of EEG was based on EEG spectral power and laterality coefficient (LC). Only the ET scale showed relationships with the laterality coefficient. The high-energy group showed right shift of activity in frontocentral and posterior areas visible in alpha and beta range, respectively. No effect of ET estimation on prefrontal asymmetry was observed. For the TC scale, an estimation of high tension was related to right prefrontal dominance and right posterior activation in beta1 band. Also, decrease of alpha2 power together with increase of beta2 power was observed over the entire scalp.


1878 ◽  
Vol 5 (111supp) ◽  
pp. 1759-1759
Author(s):  
M. Gaston Plante

1991 ◽  
Vol 155 (5) ◽  
pp. 347-347 ◽  
Author(s):  
Raymond M Lowenthal ◽  
Jean B Panton ◽  
Margaret J Baikie ◽  
J Norelle Lickiss

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1099
Author(s):  
Qingqing Chen ◽  
Yuhang Zhang ◽  
Tingting Zhao ◽  
Zhiyong Wang ◽  
Zhihua Wang

The mechanical properties and fracture behaviour of concretes under different triaxial stress states were investigated based on a 3D mesoscale model. The quasistatic triaxial loadings, namely, compression–compression–compression (C–C–C), compression–tension–tension (C–T–T) and compression–compression–tension (C–C–T), were simulated using an implicit solver. The mesoscopic modelling with good robustness gave reliable and detailed damage evolution processes under different triaxial stress states. The lateral tensile stress significantly influenced the multiaxial mechanical behaviour of the concretes, accelerating the concrete failure. With low lateral pressures or tensile stress, axial cleavage was the main failure mode of the specimens. Furthermore, the concretes presented shear failures under medium lateral pressures. The concretes experienced a transition from brittle fracture to plastic failure under high lateral pressures. The Ottosen parameters were modified by the gradient descent method and then the failure criterion of the concretes in the principal stress space was given. The failure criterion could describe the strength characteristics of concrete materials well by being fitted with experimental data under different triaxial stress states.


2017 ◽  
Vol 490 ◽  
pp. 143-154 ◽  
Author(s):  
Anna Hojna ◽  
Fosca Di Gabriele ◽  
Hynek Hadraba ◽  
Roman Husak ◽  
Ivo Kubena ◽  
...  

1979 ◽  
Vol 1 (4) ◽  
pp. 277-280 ◽  
Author(s):  
Anne B. Owen ◽  
Peter W.R. Beaumont

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