1. The Digital Twin Paradigm for Future Aerospace Vehicles: Challenges and Potential Opportunities 2. Overview of SHM in Airline Maintenance Program: Challenges and Opportunities 3. NDE in Additive Manufacturing: Survey 4. Review on SHM in Composite Sandwich Structures 5. Recent Advances in Loads/Strain Monitoring: A Review 6. Recent Advances in Optical Fibers for Ultrasonic Damage Detection 7. Flexural Wave Manipulation by using Elastic metamaterials 8. Mechanical Metamaterials and Their Potential in SHM: A Review 9. Overview of Flexoelectricity Applied to SHM 10. Overview of Phase Array Technology in SHM 11. Recent Survey of Optic Fiber Sensing in SHM 12. Beyond the Extreme Dimensionality in SHM: Manifold Learning of Spatial-temporal Data 13. Ultrasonic Wavefield Imaging in SHM 14. State-of-the-Art in Eddy Current Techniques for Damage Detection of Composite Bolted Joints 15. Frequency-Wavenumber Analysis in Polar Domain using Laser Ultrasonic Techniques Based on Circle Scan 16. Guided wavefield detection and processing for the detection of delaminations and for the assessment of the integrity of bonded joints 17. Nonlinear autoregressive exogenous method for structure health monitoring using guided waves 18. Self-healing Polymers and Composites: A Review of Recent Developments