In the current paper, different methods of repairing a pre-cracked reinforced concrete beam (RCB) were reviewed and described briefly. Afterward, near-surface mounted (NSM) technique was used to simulate reinforcement RCB using carbon fiber polymer (CFRP) laminated layer. To do this end, Firstly, based on previous experimental analytical studies limitations dimensions specified, then Minitab so...

Background: The results of the previous studies on the effects of mint on cracked nipple are contradictory. The purpose of the present study was to compare the effects of mint tea bag, mint cream and breast milk on the healing of cracked nipple during lactation. Methods: This study was a clinical trial with a control group , pre and post-test design conducted in health centers of Hamadan Univer...

A method for the identification of multiple cracks based on Discrete Wavelet Transform is presented. The analysis is provided on beams made of polymeric laminate. The estimation of the crack locations is based on the evaluation of natural modal shapes of pre-cracked beams. The modal shapes were estimated experimentally using laser Doppler vibrometry. The dynamic response of multi-cracked beams ...

We have achieved performance enhancement of polymer electrolyte membrane fuel cell (PEMFC) though crack generation on its electrodes. It is the first attempt to enhance the performance of PEMFC by using cracks which are generally considered as defects. The pre-defined, cracked electrode was generated by stretching a catalyst-coated Nafion membrane. With the strain-stress property of the membran...

Tests were conducted to determine whether the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrychidae), selects rough rice (Oryza sativa L. (Poales: Poaceae)) kernels with cracked hulls for reproduction when these kernels are mixed with intact kernels. Differing amounts of kernels with cracked hulls (0, 5, 10, and 20%) of the varieties Francis and Wells were mixed with intact ke...

The strengthening intervention of RC structures often involves already cracked concrete. To evaluate the effect level damage prior to (pre-cracks) on behavior flexurally strengthened slabs with prestressed NSM CFRP laminates, an experimental research was carried out. Two pre-cracking levels were analyzed and, for each one, three prestress tested (0%, 20% and 40%). obtained results showed that d...

Mechanical extraction: this traditional method of cottonseed oil extraction uses a circular mortar (called ghani in India, Achaya, 1993) or more advanced technology, such as a hydraulic press or a screw press (expeller). The cotton seeds may be dehulled, cracked, dried or heated before being fed to the press. The resulting cake is dried, ground and then processed into large pellets (Ash, 1992)....

In Eurocode 3, a design rule is given for predicting the ultimate resistance of net cross-section at bolt holes. This based on average stress evaluated in cross-section, and contains both reduction factor 0.9 partial factor. According to previous research, this makes over-conservative uncracked components. There are indications that conservatism accounts possible presence small cracks Very limi...

cracked and un-cracked brazilian disc specimens subjected to diametral compression were used for conducting fracture toughness and tensile strength experiments on a polymer concrete (pc) material. the value of mode i fracture toughness (kic) was determined from the center- cracked brazilian disc and the indirect tensile strength (σt) was obtained from the un-cracked brazilian disc specimen. the...