Browsing NIAR: National Institute for Aviation Research by Author "Cui, Xiaodong"
Now showing items 1-7 of 7
-
A combined X-Ray CT and mechanistic characterization of bearing failure mechanisms in bolted composite components
Cui, Xiaodong; Xiao, Jian; Lua, Jim Y.; Kariyawasam, Supun; Fulghum, Ethan; Saathoff, Caleb (Vertical Flight Society, 2021-05)This paper presents the characterization of bearing failure mechanisms in composite joints with countersunk bolt by applying an X-ray Computed Tomography (XCT) technique and a developed bearing failure model to build the ... -
Compressive response of composite laminates with defects
Cui, Xiaodong; Karuppiah, Anand Vijay; Pham, Dinh Chi; Lua, Jim Y.; Saathoff, Caleb; Seneviratne, Waruna P. (American Institute of Aeronautics and Astronautics Inc, 2020-01-05)Defects are inevitable in the manufacture and service of composite laminates and their influence on the mechanical performance of composite laminates can be substantial. Ply waviness and delamination are two major types ... -
Defects characterization and evaluation of their effects on compressive failure of composite components
Cui, Xiaodong; Pham, Dinh Chi; Karuppiah, Anand Vijay; Lua, Jim Y.; Saathoff, Caleb; Seneviratne, Waruna P. (DEStech Publications, 2019-09)In the design and certification of composite structural components for aircrafts, compression and combined compression and shear loading cases have to be considered. Various forms of defects such as ply waviness, delamination ... -
Defects characterization, damage mapping, and property evaluation of composites
Lua, Jim Y.; Sadeghirad, Alireza; Cui, Xiaodong; Karuppiah, Anand Vijay; Saathoff, Caleb; Seneviratne, Waruna P. (DEStech Publications Inc., 2018)The presence of voids in the composite laminates can reduce the mechanical properties in composites and these voids can become precursors in the activation of other failure modes such as delamination. Knowing the volume ... -
A micro-macro coupling and physics informed modeling approach for bearing failure with x-ray CT characterization
Cui, Xiaodong; Xiao, Jian; Lua, Jim Y.; Kariyawasam, Supun; Fulghum, Ethan; Saathoff, Caleb (AIAA SCITECH, 2022-01-03)The failure mechanism of composite bolted joints was investigated using an in-situ X-ray CT technique with SSB test. A physics-informed modeling approach was proposed based on the traditional CDM method and a static bearing ... -
Multiaxial fatigue damage assessment of repaired composite cruciform specimens using stress ratio dependent fatigue damage accumulation model
Lua, Jim Y.; Xiao, Jian; Cui, Xiaodong; Kariyawasam, Supun; Fulghum, Ethan; Saathoff, Caleb (American Institute of Aeronautics and Astronautics, Inc., 2021-12-29)The paper presents a combined experimental and numerical study of multiaxial fatigue damage accumulation in scarf-repaired cruciform specimens subjected to fatigue loading. The existing fatigue analysis module is improved ... -
Progressive damage and failure prediction of interlaminar tensile specimen with initial fabrication induced defects
Cui, Xiaodong; Karuppiah, Anand Vijay; Pham, Dinh Chi; Lua, Jim Y.; Saathoff, Caleb; Seneviratne, Waruna P. (DEStech Publications Inc., 2018)An automatic solution process to evaluate the effects of fabrication induced defects in composite components is developed. The framework of this approach includes defects extraction from the X-ray computed tomography (CT) ...