Coating removal from fiber-composites and aluminum using starch media blasting

Djurovic, B.; Jean, Etienne; Papini, M.; Tangestanian, P.; Spelt, J.K.

doi:10.1016/s0043-1648(98)00308-1

Cited by 32 publications

(10 citation statements)

References 6 publications

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“…Particle mechanical characteristics are listed in Table I. A relation ship between particle abrasive size and shape was also noted by (Djurovic et al, 1999). For starch media, these authors found that smaller particles were less elongated than larger particles.…”

Section: Effect Of Blast Cleaningmentioning

confidence: 71%

Effect of blast cleaning parameters on corrosion of brass parts

Masmoudi

Khlif

2012

Multidiscipline Modeling in Materials and Structures

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Purpose -The purpose of this present work is to investigate how different parameters of the blast cleaning process affect properties and quality of brass parts surface. It aims to study the following process variables: particle abrasive shape: (spherical (S) and angular (G) shot), particle abrasive size (S170, G40 and G50) and the impact velocity (40 m/s, 60 m/s and 80 m/s). Design/methodology/approach -An experimental approach based on three testing methods is used to quantify the analysis of particulate contaminants on substrates surfaces. These methods are: SEM, BSEM and EDXA plots from SEM imaging. Findings -The results obtained clearly show that the particle embedment decreases with decreasing of the size of angular abrasive. An increase in the embedment could be noted as impact velocity increased. It was also found that the angular abrasives have delivered a contamination level higher than that delivered by spherical abrasives. Furthermore, it was demonstrated that the abrasive debris nature embedded in the treated surfaces is the iron. The coupling of this debris with the base metal (copper) in the presence of wetland causes an electrochemical corrosion. Then, if the contamination level decreases, the corrosion rate in treated brass parts by steel shots decreases also. Originality/value -Search in the case of blast cleaning for the brass parts by steel shots has not been done previously. Using the spherical shape of the abrasive projected with a moderate impact velocity will be a solution in this case.

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Section: Effect Of Blast Cleaningmentioning

confidence: 71%

Effect of blast cleaning parameters on corrosion of brass parts

Masmoudi

Khlif

2012

Multidiscipline Modeling in Materials and Structures

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“…KIM et al [15] reported increasing erosion rates with increasing coating hardness. ZHANG and DONG [16], DJUROVIC et al [17] and LI et al [18] determined particle impact velocity and diameter to be the most important variables influencing the erosion rate. Particle impact velocity was stated to be the most important erosion factor by CERNUSCHI et al [19] and by WESTON et al [20].…”

Section: Coating Erosionmentioning

confidence: 99%

An energy-based approach to assess and predict erosive airfoil defouling

Rudek¹,

Zitzmann²,

Russ³

et al. 2017

Int. J. CMEM

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A dynamic indentation experiment is presented for assessment of the adhesive behavior of a range of coatings in erosive defouling of commercial aircraft engines using CO 2 dry-ice. A series of experiments is presented in which particles made from a reference material (polyoxymethylene-POM) and from CO 2 dry-ice are made to impact compressor airfoils under a range of impact angle and velocity conditions. The airfoils investigated are coated with an indicator material (PTFE), which is typically used to visualise the defouling effect in large scale compressor defouling experiments. In addition, fouled compressor airfoils taken from service and coated with a fouling typically found in low-pressure compressor stages are investigated. The energy required for the reference particles (POM) to create a defouling effect for the different coatings is determined by an experimental evaluation of their coefficient of restitution. This energy requirement is assumed to be fouling specific. Empirical defouling functions are presented. They correlate the defouling effect for both particle materials under various impact conditions. The empirical correlations are developed into a simulation procedure to predict particle impact erosion and energy dissipation of coated surfaces in numerical indentation simulations.

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“…where the component will be reused (e.g. paint removal from an aircraft superstructure), there is a desire for the particles to be as benign as possible to avoid damage to the substrate whilst still being effective in removing the coating; materials such as glass-beads, wheat starch, plastic beads (such as urea formaldehyde, melamine and acrylic), walnut shell, corn cob grit, and calcium carbonate all find applications in situations where avoidance of substrate damage is desirable (Djurovic et al, 1999;Anon., 1999;Archibald, 1991;Spelt, 1997, 1998;Tangestanian et al, 2001).…”

Section: Introductionmentioning

confidence: 99%