C-ring specimens

Method for the preparation and use of uniaxially loaded tension specimens Method for the preparation and use of C-ring specimens... 

Corrosion of metals and alloys. Part 4 Uni-axially loaded tensile specimens Corrosion of metals and alloys. Part 5 C-ring specimens... 

FIGURE 4.19 A Zr705 C-ring specimen under tensile loading to 98% of yield stress that has been tested in HI acid. 

Figure 11.8 Specimens used for the testing of stress corrosion cracking (a) U-bend specimens (b) and (c) C-ring specimens (d) uniaxal-tension-test specimen.

Corrosion of Metals and Alloys-Stress Corrosion Testing-Part 5 Preparation and Use of C-Ring Specimens... 

The C-ring specimen has also received widespread use in development of SCC data on many alloy systems, but was probably pioneered by SCC speciahsts with the aluminum producers. Many of those speciahsts worked on the development of the standard practice, and provided research data to demonstrate its performance. The specimen lends itself... 

Smooth specimens can be stressed by a constant load, by constant strain rate, or by constant deflection, which is the usual procedure. Typical specimens are (a) direct tension specimens, (b) C-ring specimens, (c) U-bend sp>ecimens, (d) bent beam specimens, and special techniques for weldments (see ASTM G 49, Practice for Preparation and Use of Direct Tension Stress-Corrosion Test Specimens ASTM G 38, Practices for Making and Using C-Ring Stress-Corrosion Test Specimen ASTM G 30, Practice for Making and Using U-Bend Stress-Corrosion Test Specimens ASTM G 39, Practice for Prep>aration and Use of Bent-Beam Stress-Corrosion Test Specimens and ASTM G 58, Practice for the Preparation of Stress-Corrosion Test Specimens for Weldments, respectively). 

Fig. 8.107 Notched C ring specimen with attached strain gauges...

The influence of proton irradiation on the stress corrosion cracking behaviour of sensitised steel SAE 304 (1.4301) in high purity water with 1 pS/cm, oxygen saturated at 288 °C was investigated using C-ring specimens, namely with electrochemical noise [115]. 

Flat panels exposed boldly to the environment on special exposure racks are a common method for testing materials and protective coatings (Fig. 9.39). Various other specimen configurations have been used, including stressed U-bend or C-ring specimens for stress corrosion cracking (SCC) studies, and crevice assemblies to verify the susceptibility of specific configurations (Fig. 9.40). 

---