Influence of Electron Beam Irradiation on Bending Fracture Stress for Soda Glass

Abstract

To study the effects of electron beam (EB) irradiation on the bending stress-strain curves for soda glass, we measured these curves by a standard bending test. EB irradiation enhanced bending fracture stress and rigidity of the glass, and also extended the crack length of a homogeneously fractured sample. When the EB irradiation generated dangling bonds at the weaker-bonded metal-oxygen atomic pairs in the soda glass network structure, partial relaxation occurred at points of residual strain in the network structure. Evidently the increased rigidity was mainly due to an increase in the bonding energy for the silicon-oxygen atomic pairs in the atomic network structure. The irradiation also eliminated the crack origin points in the homogeneously fractured soda glass, thus inducing a high fracture stress.

Effect of 100 keV Class Electron Beam Irradiation on Impact Fatigue Behavior of PZT Ceramics

“…Furthermore, since active terminated atoms with dangling bonds without crack generation have been formed by EBI for silica and silicate glasses, 13,14) both strengthening and ductility enhancement are drawn. [10][11][12] Using the radial distribution function of SO 2 glass, optimal dose of EBI has decreased its mean atomic distance 10) . The compressive strain generally occurs at surface of the ceramics with similar chemical bonds.…”

“…The electron beam irradiation (EBI) with homogeneous low potential of 100 keV class has been suggested and developed to draw the marvelous properties of strengthening and ductility enhancement for silica and silicate glass without crack generation. [10][11][12] Active terminated atoms with dangling bonds 13,14) have been formed in silica 10) and silicate glasses 11) treated by EBI. On the other hand, additional dose of 0.43 MGy-EBI reduces the bending strength, its strain and its fracture energy, to approximately 1/2, 1/3 and 1/6 of that untreated because of radiation damages.…”

Effects of Irradiation Dose of Sheet-Like Electron Beam and its Cathode Voltage on Impact Strength of Carbon Fiber Reinforced Thermoplastic Polyamide just before Shipping

“…EB-irradiation has had a positive track record improving properties of wetting 10) , mist resistance [11][12][13][14], polymer adhesion [15][16][17][18][19][20][21][22][23][24], sterilization [25], conductivity [26] and strength [3,4,6,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] of many materials including: CF [3,4], silicate glasses [27][28][29][30][31][32], polymers [6,[35][36]…”