Experimental Investigation of Steel Lap Welded Pipe Joint Performance under Severe Axial Loading Conditions in Seismic or Geohazard Areas

2020 ◽  
Author(s):  
Brent D. Keil ◽  
Gregory Lucier ◽  
Spyros A. Karamanos ◽  
Richard D. Mielke ◽  
Fritz Gobler ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Axial Loading ◽  
Loading Conditions ◽  
Joint Performance ◽  
Welded Pipe ◽  
Pipe Joint

Experimental investigation on the web crippling behaviour of pultruded GFRP wide-flange sections subjected to two-flange loading conditions

2021 ◽  
Vol 259 ◽  
pp. 113469 ◽  
Author(s):  
Jyotirmoy Haloi ◽  
Suman Kumar Mushahary ◽  
Arun Chandra Borsaikia ◽  
Konjengbam Darunkumar Singh
Keyword(s):  
Experimental Investigation ◽  
Loading Conditions ◽  
Web Crippling ◽  
The Web

Study on Multi-Axial Mechanical Properties of a Polyurethane Foam and Experimental Verification

2011 ◽  
Vol 311-313 ◽  
pp. 301-308
Author(s):  
Shou Hong Han ◽  
Zhen Hua Lu ◽  
Yong Jin Liu
Keyword(s):  
Mechanical Properties ◽  
Constitutive Model ◽  
Polyurethane Foam ◽  
Axial Compression ◽  
Axial Loading ◽  
Hydrostatic Compression ◽  
Model Parameters ◽  
Loading Conditions ◽  
Three Point Bending ◽  
Pu Foam

In order to investigate the multi-axial mechanical properties of a kind of PU (polyurethane) foam, some experiments in different loading conditions including uni-axial tension, uni-axial compression, hydrostatic compression and three-point bending were conducted. It is shown that the hydrostatic component influences yield behavior of PU foam, the yield strength and degree of strain hardening in hydrostatic compression exceed those for uni-axial compression. In terms of the differential hardening constitutive model, the evolution of PU foam yield surface and plastic hardening laws were fitted from experimental data. A finite element method was applied to analyze the quasi-static responses of the PU foam sandwich beam subjected to three-point bending, and good agreement was observed between experimental load-displacement responses and computational predictions, which validated the multi-axial loading methods and stress-strain constitutive model parameters. Moreover, effects of two foam models applied to uni-axial loading and multi-axial loading conditions were analyzed and compared with three-point bending tests and simulations. It is found that the multi-axial constitutive model can bring more accurate prediction whose parameters are obtained from the tests above mentioned.

scholarly journals Verification of Brittle Fracture Criteria for Bimaterial Structures

2014 ◽  
Vol 8 (1) ◽  
pp. 44-48
Author(s):  
Grzegorz Mieczkowski ◽  
Krzysztof Molski
Keyword(s):  
Experimental Data ◽  
Composite Materials ◽  
Cyclic Loading ◽  
Brittle Fracture ◽  
Axial Loading ◽  
Loading Conditions ◽  
Fracture Criteria ◽  
Interfacial Cracks ◽  
Theoretical Results ◽  
Brittle Fracture Criteria

Abstract The increasing application of composite materials in the construction of machines causes strong need for modelling and evaluating their strength. There are many well known hypotheses used for homogeneous materials subjected to monotone and cyclic loading conditions, which have been verified experimentally by various authors. These hypotheses should be verified also for composite materials. This paper provides experimental and theoretical results of such verifications for bimaterial structures with interfacial cracks. Three well known fracture hypotheses of: Griffith, McClintock and Novozhilov were chosen. The theoretical critical load values arising from each hypotheses were compared with the experimental data including uni and multi-axial loading conditions. All tests were carried out with using specially prepared specimens of steel and PMMA.

Computer Optimizing of Bevel Angles for Welded Pipe Joints

1986 ◽  
Vol 2 (01) ◽  
pp. 18-22 ◽  
Author(s):  
H. W. Mergler
Keyword(s):  
Direct Relationship ◽  
Considerable Reduction ◽  
Pipe Joints ◽  
Welded Pipe ◽  
Weld Area ◽  
Pipe Joint

There is a direct relationship between pipe joint welding times and applied weld volume. This paper gives the computations necessary to define the locus for the branch saddle as a function of certain variables and of the optimized bevel angle. Joint configurations were studied for weld area variations for both fixed and optimized bevel angle configurations. Results demonstrated a considerable reduction in weld volume when the optimized volume was compared with the volume obtained using a fixed bevel angle.

Numerical Simulation of Steel Lap Welded Pipe Joint Behavior in Seismic Conditions

2018 ◽  
Author(s):  
Giannoula Chatzopoulou ◽  
Dimitris Fappas ◽  
Spyros A. Karamanos ◽  
Brent D. Keil ◽  
Richard D. Mielke
Keyword(s):  
Numerical Simulation ◽  
Welded Pipe ◽  
Joint Behavior ◽  
Pipe Joint

Corrigendum to “Carbon nanotubes reinforced lightweight cement testing under tri-axial loading conditions” [J. Pet. Sci. Eng. 174 (2019) 663–675]

2019 ◽  
Vol 178 ◽  
pp. 1203
Author(s):  
Xin Li ◽  
Saeed Rafieepour ◽  
Stefan Z. Miska ◽  
Nicholas E. Takach ◽  
Evren Ozbayoglu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Axial Loading ◽  
Loading Conditions

Effect of Sintering Schedule to the Alloyability of FeCrAl Powder Mix Formed at above Ambient Temperature

2015 ◽  
Vol 1115 ◽  
pp. 199-202
Author(s):  
Mujibur M. Rahman ◽  
A.A.A. Talib
Keyword(s):  
Experimental Investigation ◽  
Elevated Temperature ◽  
Ambient Temperature ◽  
Axial Loading ◽  
Xrd Analysis ◽  
Compaction Process ◽  
Argon Gas ◽  
Fecral Alloy ◽  
Powder Mass ◽  
Die Compaction

This paper presents the outcomes of an experimental investigation on the effect of sintering schedule to the alloyability of FeCrAl powder mix formed through warm powder compaction process. A lab-scale uni-axial die compaction rig was designed and fabricated which enabled the compaction of powder mass at elevated temperature. Iron (Fe) powder ASC 100.29 was mechanically mixed with other alloying elements, namely chromium (Cr), and aluminum (Al) for 60 minutes and compacted at 150°C by applying 130 kN axial loading to generate green compacts. The defect-free green compacts were subsequently sintered in an argon gas fired furnace for different holding times. The sintered samples were then undergone XRD analysis. The results revealed that the alloyability of sintered products were affected by the holding time during sintering. The sample sintered at 800°C for 60 minutes showed the highest intensity of FeCrAl alloy.

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