Experimental Investigation of Light Metal on Out-of-plane Tearing and Shredding Test

2012 ◽  
Vol 48 (02) ◽  
pp. 109 ◽  
Author(s):  
Li DENG
Keyword(s):  
Experimental Investigation ◽  
Light Metal ◽  
Out Of Plane

A parametric study on out-of-plane instability of doubly reinforced structural walls. Part II: Experimental investigation

2020 ◽  
Vol 18 (11) ◽  
pp. 5193-5220
Author(s):  
Farhad Dashti ◽  
Mayank Tripathi ◽  
Rajesh P. Dhakal ◽  
Stefano Pampanin
Keyword(s):  
Experimental Investigation ◽  
Parametric Study ◽  
Structural Walls ◽  
Out Of Plane

scholarly journals An experimental investigation of the effects of out-of-plane loading on the in-plane seismic response of SC wall piers

2019 ◽  
Vol 190 ◽  
pp. 380-388 ◽  
Author(s):  
Brian Terranova ◽  
Saahastaranshu Bhardwaj ◽  
Andrew Whittaker ◽  
Amit Varma ◽  
Nebojsa Orbovic
Keyword(s):  
Experimental Investigation ◽  
Seismic Response ◽  
Out Of Plane

Experimental Investigation of Mode Localization and Forced Response Amplitude Magnification for a Mistuned Bladed Disk

2000 ◽  
Author(s):  
John Judge ◽  
Christophe Pierre ◽  
Oral Mehmed
Keyword(s):  
Experimental Investigation ◽  
Traveling Wave ◽  
Forced Response ◽  
Response Amplitude ◽  
Mode Shapes ◽  
Bladed Disks ◽  
Element Analysis ◽  
Mode Localization ◽  
Bladed Disk ◽  
Out Of Plane

The results of an experimental investigation on the effects of random blade mistuning on the forced dynamic response of bladed disks are reported. The primary aim of the experiment is to gain understanding of the phenomena of mode localization and forced response blade amplitude magnification in bladed disks. A stationary, nominally periodic, twelve-bladed disk with simple geometry is subjected to a traveling-wave, out-of-plane, “engine order” excitation delivered via phase-shifted control signals sent to piezo-electric actuators mounted on the blades. The bladed disk is then mistuned by the addition of small, unequal weights to the blade tips, and it is again subjected to a traveling wave excitation. The experimental data is used to verify analytical predictions about the occurrence of localized mode shapes, increases in forced response amplitude, and changes in resonant frequency due to the presence of mistuning. Very good agreement between experimental measurements and finite element analysis is obtained. The out-of-plane response is compared and contrasted with the previously reported in-plane mode localization behavior of the same test specimen. This work also represents an important extension of previous experimental study by investigating a frequency regime in which modal density is lower but disk-blade interaction is significantly greater.

Experimental Investigations on ThermoMechanical Tensioning (TMT), comparison with Heat Sink, and Its Application to a Grillage Structure

2020 ◽  
pp. 1-8
Author(s):  
Amith Gadagi ◽  
Nisith Ranjan Mandal ◽  
Om Prakash Sha ◽  
Sharat Kumar ◽  
Sanyappa Pujari ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Control Mechanism ◽  
Thin Plates ◽  
Experimental Investigations ◽  
Ship Structures ◽  
Buckling Strength ◽  
Distortion Control ◽  
Out Of Plane ◽  
Transverse Welds ◽  
Heat Sinking

Thin plates, which are widely used in ship structures, undergo weld-induced buckling distortions because of their lower critical buckling strength. Thus, there is a need for an active in-process distortion control mechanism in the welding involving thin plates. In this regard, a ThermoMechanical Tensioning (TMT) method was developed and implemented successfully. In the current work, experimental investigation of the effect of TMT pull on the resulting welding distortions is studied and also the TMT process is compared with a heat sinking technique. The experimental results indicate that an increase in the TMT pull would reduce the extent of weld-induced buckling distortions. The results also suggest that a complicated heat sinking technique can be effectively replaced by a TMT process in reducing the welding out-of-plane distortions. The concept of TMT is further extended to the fabrication of grillage structures used in ship structures, which includes longitudinal and transverse welds.

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