Raymond G. Boeman
Oak Ridge National Laboratory
Crack growth resistance curveComposite numberUltimate tensile strengthOpticsDiffraction gratingEngineeringMode (statistics)Finite element methodMatrix (mathematics)Carbon fibersDeformation (engineering)Strain rateCreepComposite materialCellulosic ethanolEpoxyInterferometryNanotechnologyFlexural strengthCrashMode couplingMaterials scienceDynamic testingStrain energyRange (aeronautics)Oak Ridge National LaboratorySurface (mathematics)Carbon fiber reinforced polymerMachine controlGratingComposite plateTest fixtureCarbon steelCrashworthinessBiomassBiorefineryReplication (microscopy)Characterization (materials science)User FacilityPolymer composite materialsFracture testingCarbon fiber compositeMaterial systemLaminated compositesLoading rateCompressive strengthPolymer nanocompositeStrain energy release rateSpecific strengthComputationFuel efficiencyNumerical analysisCrack tip opening displacementPolymerAutomotive industryFiber-reinforced compositeBiofuelWaste managementMechanicsFracture mechanicsRefining (metallurgy)Structural engineeringFossil fuelAdhesiveMoiré patternCrack closureFibre-reinforced plasticEnergy managementNanocompositeShear (geology)Fracture toughness
14Publications
9H-index
498Citations
Publications 13
Newest
#1Matthew H. Langholtz (ORNL: Oak Ridge National Laboratory)H-Index: 17
#2Mark Downing (ORNL: Oak Ridge National Laboratory)H-Index: 15
Last. Martin Keller (ORNL: Oak Ridge National Laboratory)H-Index: 39
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Lignin by-products from biorefineries has the potential to provide a low-cost alternative to petroleum-based precursors to manufacture carbon fiber, which can be combined with a binding matrix to produce a structural material with much greater specific strength and specific stiffness than conventional materials such as steel and aluminum. The market for carbon fiber is universally projected to grow exponentially to fill the needs of clean energy technologies such as wind turbines and to improve ...
20 CitationsSource
#1George C. Jacob (UT: University of Tennessee)H-Index: 10
#2J. Michael Starbuck (ORNL: Oak Ridge National Laboratory)H-Index: 12
Last. Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
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The ACC (Automotive Composite Consortium) is interested in investigating the use of random chopped fiber reinforced composites as crash energy absorbers primarily because of the low costs involved in their manufacture thus making them cost effective for automotive applications. Although many scientists have investigated the energy absorption characteristics in various continuous fiber reinforced composite materials and their dependence on strain rate, there is very little literature available on...
18 CitationsSource
#1George C. Jacob (UT: University of Tennessee)H-Index: 10
#2James Michael Starbuck (ORNL: Oak Ridge National Laboratory)H-Index: 2
Last. Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
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While many scientists have investigated the fracture toughness properties in various continuous fiber-reinforced composite materials and their dependence on strain rate, there is absolutely no literature available on the fracture toughness properties of random-chopped fiber-reinforced composite materials and their strain rate dependence, which can find extensive use in a wide range of load-bearing engineering and industrial process applications primarily due to the low costs involved in their ma...
24 CitationsSource
#1De Xie (UM: University of Michigan)H-Index: 12
#2Anthony M. Waas (UM: University of Michigan)H-Index: 58
Last. Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
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Abstract The fracture behavior of a composite/adhesive/steel bonded joint was investigated by using double cantilever beam specimens. A starter crack is embedded at the steel/adhesive interface by inserting Teflon tape. The composite adherend is a random carbon fiber reinforced vinyl ester resin composite while the other adherend is cold rolled steel. The adhesive is a one-part epoxy that is heat cured. The Fernlund–Spelt mixed mode loading fixture was employed to generate five different mode mi...
83 CitationsSource
#1De Xie (UM: University of Michigan)H-Index: 12
#2Jaeung Chung (UM: University of Michigan)H-Index: 10
Last. Lynn B. Klett (ORNL: Oak Ridge National Laboratory)H-Index: 2
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This paper presents a predictive methodology and verification through experiment for the analysis and failure of adhesively bonded, hat stiffened structures using coupon level input data. The hats were made of steel and carbon fiber reinforced polymer composite, respectively, and bonded to steel adherends. A critical strain energy release rate criterion was used to predict the failure loads of the structure. To account for significant geometrical changes observed in the structural level test, an...
26 CitationsSource
#1George C. Jacob (UT: University of Tennessee)H-Index: 10
#2J. Michael Starbuck (ORNL: Oak Ridge National Laboratory)H-Index: 12
Last. Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
view all 5 authors...
This article is a detailed review of the strain rate dependence of fracture toughness properties in polymer composite materials. An attempt is made to draw together all the strain rate studies done in the past and to elucidate the reasons given by the authors of the reviewed papers for the trends resulting from their studies to better understand the strain rate effects on the fracture toughness of fiber reinforced polymer composite materials. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 8...
71 CitationsSource
A numerical method based on the virtual crack closure technique (VCCT) (Rybicki and Kanni- nen (1977)) and in conjunction with the finite element (FE) method is presented to compute strain energy re- leaserates forcracks that kink. Themethod partitionsthe strain energy release rate and provides an efficient means to compute values of the mode I (GI) and mode II (GII ) energy release rate at the tip of a kinking crack. The solution procedure is shown to be computationally effi- cient and operatio...
86 CitationsSource
#1George C. Jacob (UT: University of Tennessee)H-Index: 10
#2J. Michael Starbuck (ORNL: Oak Ridge National Laboratory)H-Index: 12
Last. Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
view all 5 authors...
This paper is a detailed review of the strain rate dependence of some mechanical properties of polymer composite materials. An attempt is made to present and summarize much of the published work relating to the effect of strain rate studies done in the past on the tensile, shear, compressive, and flexural properties of composite materials to better understand the strain rate effects on these mechanical properties of fiber-reinforced polymer composite materials. © 2004 Wiley Periodicals, Inc. J A...
184 CitationsSource
#1Raymond G. Boeman (ORNL: Oak Ridge National Laboratory)H-Index: 9
#2Ari Garo Caliskan (Ford Motor Company)H-Index: 6
The crush performance of lightweight composite automotive structures varies significantly between static and dynamic test conditions. This paper discusses the development of a new dynamic testing facility that can be used to characterize crash performance at high loads and constant speed. Previous research results from the Energy Management Working Group (EMWG) of the Automotive Composites Consortium (ACC) showed that the static crush resistance of composite tubes can be significantly greater th...
3 CitationsSource
#1D.L. Erdman (ORNL: Oak Ridge National Laboratory)
#2R. Battiste (ORNL: Oak Ridge National Laboratory)
Last. L.B. Klett (ORNL: Oak Ridge National Laboratory)
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