A plasmonic lens assisted tip-enhanced Raman spectroscopy setup has been constructed and used to investigate specimens of carbon nanotubes.
In this study, specimens of carbon fibre-reinforced polymer (CFRP) laminate strengthened beam-type cantilevers with bottom steel bolt anchors were designed and tested.
Square specimens of carbon fibre/epoxy laminates with different stacking sequences (unidirectional, cross-ply, quasi-isotropic and woven laminates) were tested using a Drop Weight Tower device.
In the present work, the working electrode was made of squared specimen of carbon steel welded with copper rod from one side and totally encapsulated into a glass rod, of larger diameter (5 mm) so that only one face of the carbon steel specimen, of dimension (1 cm × 1 cm), was left to be exposed to the test solution and act as the active working surface.
In one experiment, a specimen of carbon steel was kept in an aqueous solution of pertechnetate for 20 years and was still uncorroded.
The aim of presented investigations was to perform uniaxial tensile tests of flat specimens made of carbon fiber reinforced composites with strain measurements performed by means of Digital Image Correlation (DIC) method.
(1) The worn mass when the flat specimen made of POM is rubbed by the POM pin specimen is larger than when with the pin specimen made of carbon steel.
In order to check on the validity of the criterion, fatigue tests were performed using specimens of annealed carbon steel as well as of heat-treated alloy steel.
Fatigue crack growth (FCG) tests for compact-tension specimens of low-carbon steel were performed under various combinations of hydrogen pressures (0.1 90 MPa), test frequencies (0.001 10 Hz), and test temperatures (room temperature, 363 K, and 423 K).
In order to understand which parameter, such as the crack density, the total crack length and the total crack area, is a useful indicator of fatigue damage, rotatory bending fatigue tests are carried out using smooth specimens of medium-carbon steel.
That is, all these specimens showed peaks of carbon, oxygen, phosphorus, and calcium consistent with the presence of carbonate, phosphate, and calcium ions within the mineral phase of NB (Fig. 13A F).
