Related Experiment Video
Updated: Aug 20, 2026

Fused Filament Fabrication (FFF) of Metal-Ceramic Components
Published on: January 11, 2019
[The study of viscoelastic residual stresses of ceramic-metal bond]
Hai-tao Xin1, Xuan-xiang Ma, Yu-long Li
1Dept. of Prosthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
Objective:
To study the residual stresses of ceramic-metal bond at viscoelastic and elastic phases during cooling of porcelain-fused-to-metal in order to precisely calculate the ceramic-metal bond strength and improve the restorations.
Methods:
The finite element model was set up according the crack initiation test (three-point flexure bond test) based on ISO Standard, elements of viscoelastic and themal-displacement were used to part the model. The result at viscoelastic phases was used as initiation condition of elastic phases to add up.
Results:
The compressive stress was caused by metal during cooling occurred in the ceramic. The shear stress induced by loading was offset by thermal shear stress. Load tensile stress and the thermal compressive stress vertical of interface concentrated at the end of the bond interface, but the tensile was greatly higher.
Conclusion:
The residual stress is very important to metal-ceramic restorations, and the viscoelastic behavior of porcelain greatly influences it. If the metal and ceramic are compatible,the components stresses of the residual stresses may benefit to ceramic-metal bond, and can be taken as a part of bond stresses.
Related Concept Videos
Residual Stresses
Residual Stresses in Bending
Residual Stresses in Circular Shafts
Stress-Strain Diagram - Ductile Materials
Stresses under Combined Loadings
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
Yield Criteria for Ductile Materials under Plane Stress
The Maximum Shearing Stress Criterion, also known as the...
