Effect of Defect Size on the Failure of L Shaped Composite Joints

Uyar, Imren
Tasdemir, Burcu
Denizhan, Yavas
Çöker, Demirkan


Gündüz, Güngör (Elsevier BV, 1988-01-01)
The interfacial bond between a steel fibre and concrete generally increases with the polymer content. Naphthalene used to generate new pores in order t increase the polymer loading and thus to increase the interfacial bond strength has a positive effect up to 3% by weight. Higher amounts weaken the cementitious phase and also decrease the amount of polymer incorporated. Drying of concrete before impregnation at 150°C rather than at 105°C increases the polymer loading and thus the interfacial bond strength. ...
Effect of pile orientation on the fatigue performance of jointless bridge H-piles subjected to cyclic flexural strains
Karalar, Memduh; Dicleli, Murat (2023-02-01)
This paper explores the effect of pile orientation on the low cycle fatigue (LCF) performance of steel H–piles (SPs) at jointless bridge (JB) abutments via experimental testing and finite element simulation. The experimental testing program includes 42 full scale SP specimens subjected to strong axis (SA) and weak axis (WA) bending. The SPs are tested under cyclic displacement reversals mimicking the thermal induced displacement cycles associated with the seasonal elongation and contraction of the JB in the...
Effect of Support Width on Stress Resultants in Ring Beams Interacting with Silo Shells
Topkaya, Cem (2019-09-20)
Elevated cylindrical metal silos are often supported on a ring beam which rests on discrete column supports. The ring beam plays an important role in redistributing the majority of the discrete forces from the column supports into a more uniform stress state in the cylindrical wall, which is necessary to reduce the potential for buckling of the shell wall. Traditional design treatments for ring beams assumed that the ring is supported by knife‐edge supports and is under the action of a uniformly distributed...
Effect of particle size and slag content on the early hydration of interground blended cements
Cetin, Can; Erdoğan, Sinan Turhan; Tokyay, Mustafa (2016-03-01)
Three blended cements prepared by intergrinding 6-35% slag with clinker and gypsum, and a control portland cement, were sieved to yield 0-10 mu m, 10-30 mu m, 30-50 mu m, and >50 mu m subgroups. Clinker/slag/gypsum contents, and oxide compositions of the subgroups differed significantly from the unsieved cements. Fine subgroups always contained more gypsum and had lower slag-to-clinker ratios than coarse subgroups. Heat evolution was investigated up to 48 h using isothermal calorimetry. Contribution of slag...
Effect of thickness and pre-crack length on delamination of unidirectional l-shaped laminated composites
Gozluklu, Burak; Yavas, Denizhan; Çöker, Demirkan (null; 2012-12-01)
It is widely assumed that delamination initiates at the curved region of the Lshaped laminate leading to loss of loading carrying capacity. However, as shown in this paper, under certain conditions a second failure mode in thick L-shaped laminates is observed in which a secondary crack initiates at the arm region. Delamination in L-shaped laminates is modeled using dynamic (explicit) finite element analysis in conjunction with cohesive zone methods. The 2-D model consists of 24 plies of unidirectional CFRP ...
Citation Formats
I. Uyar, B. Tasdemir, Y. Denizhan, and D. Çöker, “Effect of Defect Size on the Failure of L Shaped Composite Joints,” 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72869.