Liquid Penetrant Testing (LPT), also known as Dye Penetrant Testing (DPT), is a widely used non-destructive testing (NDT) method for detecting surface-breaking defects in materials. This process is particularly effective in finding cracks, pores, and other surface irregularities that may not be visible to the naked eye. LPT is commonly applied in industries such as aerospace, automotive, construction, oil and gas, and manufacturing for ensuring the integrity of materials and components.