85 citations · 365 across the 27 of their papers we have counts for
29 papers
Rethinking Ductility -- A Study Into the Size-Affected Fracture of Polymers
Zainab S. Patel, Abdulaziz O. Alrashed, Kush Dwivedi +2
Ductility quantifies a material's capacity for plastic deformation, and it is a key property for preventing fracture driven failure in engineering parts. While some brittle materia…
Effects of Thermal Modification on the Flexure Properties, Fracture Energy, and Hardness of Western Hemlock
Troy Nakagawa, Erik Poulin, Talbot Rueppel +9
This study investigates the effect of thermal modification on the flexural properties, transverse fracture energy, and hardness of western hemlock, a material which is finding incr…
Size Effect and Scaling in Quasi-static and Fatigue Fracture of Graphene Polymer Nanocomposites
Yao Qiao, Kaiwen Guo, Marco Salviato
This work investigated how the structure size affects the quasi-static and fatigue behaviors of graphene polymer nanocomposites, a topic that has been often overlooked. The results…
Effects of Average Number of Platelets Through the Thickness and Platelet Width on the Mechanical Properties of Discontinuous Fiber Composites
Seunghyun Ko, Troy Nakagawa, Zhisong Chen +7
In this study, we experimentally and numerically investigate the evolution of the tensile material properties of Discontinuous Fiber Composites (DFCs) with an increasing average nu…
The Gap Test: Effects of Crack Parallel Compression on Fracture in Carbon Fiber Composites
Jeremy Brockmann, Marco Salviato
This paper explores the global Mode I fracture energy of a carbon fiber composite subject to a biaxial stress state at a crack tip, specifically in which one stress component is co…
Stress Distributions and Notch Stress Intensity Factors in Multimaterial V-notches Under Antiplane Shear and Torsion
Marco Salviato
This study investigates how the insertion of multimaterial circular regions embracing the tip of a finite V-notch can be used to reduce the Notch Stress Intensity Factors (NSIFs) i…
Effects of Out Time on the Mechanical and Fracture Properties of Chopped Fiber Composites Made From Repurposed Aerospace Prepreg Scrap and Waste
Troy Nakagawa, Seunghyun Ko, Cory Slaughter +3
In this study, the effects of prepreg out time on the mechanical and fracture properties of Discontinuous Fiber Composites (DFCs) are investigated. Carbon fiber prepregs are aged a…
Effect of Temperature History During Additive Manufacturing on Crystalline Morphology of Polyether Ether Ketone
Austin Lee, Mathew Wynn, Liam Quigley +2
Additive manufacturing parameters of high-performance polymers greatly affect the thermal history and consequently quality of the end-part. For fused deposition modeling (FDM), thi…
Elastic and Fracture Behavior of Three-Dimensional Ply-to-Ply Angle Interlock Woven Composites: Through-Thickness, Size Effect, and Multiaxial Tests
Weixin Li, Yao Qiao, Joel Fenner +4
This work presents a comprehensive investigation of the elastic and fracture behavior of ply-to-ply angle interlock three-dimensional woven composites. The research investigated no…
REPORT: Investigation on Curvilinear Anisotropy via Isogeometric Analysis (IGA)
Kenta Suzuki, Sean E. Phenisee, Marco Salviato
The advent of multi-material additive manufacturing and automated composite manufacturing has enabled the design of structures featuring complex curvilinear anisotropy. To take adv…
Ply-drop design of non-conventional composites using Bayesian optimization
Koshiro Yamaguchi, Sean E. Phenisee, Zhisong Chen +2
Automated Fiber Placement (AFP) technology provides a great ability to efficiently produce large carbon fiber reinforced composite structures with complex surfaces. AFP has a wide…
Micro-Computed Tomography Analysis of Damage in Notched Composite Laminates Under Multi-Axial Fatigue
Yao Qiao, Marco Salviato
The broad application of polymer composites in engineering demands the deep understanding of the main damage mechanisms under realistic loading conditions and the development of pr…
Aerogami: Composite Origami Structures as Active Aerodynamic Control
Mircea Cozmei, Tristan Hasseler, Everett Kinyon +3
This study explores the use of origami composite structures as active aerodynamic control surfaces. Towards this goal, two origami concepts were designed leveraging a combination o…
A Study on the Multi-axial Fatigue Failure Behavior of Notched Composite Laminates
Yao Qiao, Antonio Alessandro Deleo, Marco Salviato
Composite structures must endure a great variety of multi-axial stress states during their lifespan while guaranteeing their structural integrity and functional performance. Unders…
Molecular dynamics simulation for cross-linking processes and material properties of epoxy resins with the first principle calculation combined with global reaction route mapping algorithms
Yutaka Oya, Masahiro Nakazawa, Keiichi Shirasu +13
Herein, epoxy resin is cured by coupling quantum chemical (QC) calculations with molecular dynamics (MD) simulations that enable parameter-free prediction of material characteristi…
Mode I and II Interlaminar Fracture in Laminated Composites: A Size Effect Study
Marco Salviato, Kedar Kirane, Zdeněk P. Bažant +1
This work investigates the mode I and II interlaminar fracturing behavior of laminated composites and the related size effects. Fracture tests on geometrically scaled Double Cantil…
Effect of the Thickness on the Fracturing Behavior of Discontinuous Fiber Composite Structures
Seunghyun Ko, James Davey, Sam Douglass +3
In this study, we investigate experimentally and numerically the mode I intra-laminar fracture and size effect of Discontinuous Fiber Composites (DFCs) as a function of the structu…
Enhancing the Electrical and Thermal Conductivities of Polymer Composites via Curvilinear Fibers: An Analytical Study
Marco Salviato, Sean E. Phenisee
The new generation of manufacturing technologies such as e.g. additive manufacturing and automated fiber placement has enabled the development of material systems with desired func…
Fracturing Behavior and Size Effect of Discontinuous Fiber Composite Structures with Different Platelet Sizes
Seunghyun Ko, Jinkyu Yang, Mark E. Tuttle +1
This study investigates the mode I intra-laminar fracture and size effect in Discontinuous Fiber Composites (DFCs). Towards this goal, the results of fracture tests on geometricall…
Strength and Cohesive Behavior of Thermoset Polymers at the Microscale: A Size-Effect Study
Yao Qiao, Marco Salviato
This study investigated, experimentally and numerically, the fracturing behavior of thermoset polymer structures featuring cracks and sharp u-notches. It is shown that, even for ca…
Study of the Fracturing Behavior of Thermoset Polymer Nanocomposites via Cohesive Zone Modeling
Yao Qiao, Marco Salviato
This work proposes an investigation of the fracturing behavior of polymer nanocomposites. Towards this end, the study leverages the analysis of a large bulk of fracture tests from…
A Study on the Fracturing Behavior of Thermoset Polymer Nanocomposites
Yao Qiao, Cory Hage Mefford, Marco Salviato
This work proposes an investigation on the fracturing behavior of polymer nanocomposites. Towards this end, the study leverages on the analysis of a large bulk of fracture tests fr…
Failure and Scaling of Graphene Nanocomposites
Cory Hage Mefford, Yao Qiao, Marco Salviato
This work proposes an investigation on the scaling of the structural strength of polymer/graphene nanocomposites. To this end, fracture tests on geometrically scaled Single Edge No…
Elastic Microplane Formulation for Transversely Isotropic Materials
Congrui Jin, Marco Salviato, Weixin Li +1
This contribution investigates the extension of the microplane formulation to the description of transversely isotropic materials such as shale rock, foams, unidirectional composit…