Method of 3D Coating Accumulation Modeling Based on Inclined Spraying

Area of Science:

• Materials Science
• Manufacturing Engineering
• Surface Engineering

Background:

• Accurate 3D cumulative-coating modeling is crucial for surface repair processes in aviation and aerospace.
• Current simulation methods require precise coating thickness data, which can be challenging to obtain.

Purpose of the Study:

• To develop a novel 3D cumulative-coating model based on inclined spraying for improved accuracy and speed.
• To validate the effectiveness of the proposed model in collecting coating thickness distribution data.

Main Methods:

• Establishment of an oblique spraying layer cumulative model to collect coating thickness data at various spray distances.
• Development of a 3D cumulative-coating model using spray gun axis distance and measurement point distance as inputs, with coating thickness as output.

Main Results:

• The oblique spraying layer cumulative model demonstrated a mean relative error of less than 4.1% for spraying distances between 170-290 mm.
• The 3D cumulative-coating model showed applicability within a range of -80 to 80 mm.
• The proposed 3D model achieved 1.2% and 21.5% higher accuracy compared to two similar existing models.

Conclusions:

• The developed 3D cumulative-coating modeling approach based on inclined spraying is accurate and fast.
• This method enables precise 3D cumulative-coating modeling for spraying process simulations in critical industries.