To reduce weight and improve strength in the aerospace industry, composite structure has gained popularity as a replacement for conventional materials and structures, such as adhesive bonding and honeycomb structure. However, the adhesive bonding process is more susceptible to quality variations during manufacturing than traditional joining methods. Shearography, lock-in thermography and pulsed thermography are widely used in the aerospace industry. The three techniques are often used to inspect for various aerospace applications, such as delaminations in composite structures or skin-to-core disbands in honeycomb structures. A study of detection honeycomb structures using the three non-destructive testing (NDT) methods is presented and their potential for inspecting disbanding are demonstrated. The advantages and disadvantages of these three techniques over other NDT methods are also outlined. Rusult shows that all the three NDT methed are available to measuring the bonding process, and the shearography is the best.