{"id":1743,"date":"2024-07-30T16:40:50","date_gmt":"2024-07-30T16:40:50","guid":{"rendered":"https:\/\/svestudy.com\/?page_id=1743"},"modified":"2025-05-11T10:54:14","modified_gmt":"2025-05-11T10:54:14","slug":"ame-unit-5-q3","status":"publish","type":"page","link":"https:\/\/svestudy.com\/?page_id=1743","title":{"rendered":"AME Unit 5 Q3"},"content":{"rendered":"\n
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With reference to osmosis in glass reinforced plastic (GRP) hulls:
(a) explain the process of osmosis and the method by which osmotic blisters occur in service;
(6)
(b) describe a procedure for the local treatment of a single blister.(4)<\/p>\n\n\n

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Osmosis<\/p>\n\t\t\t

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Osmosis<\/strong> is the spontaneous net movement of solvent molecules through a selectively permeable membrane from a region of high water potential (region of lower solute concentration) to a region of low water potential (region of higher solute concentration). \u00a0<\/a><\/p>\n\n\n\n

1. www.slideshare.net <\/a><\/a><\/a><\/p>\n\n\n\n

<\/a><\/a>2. Osmosis – Wikipedia <\/a><\/a><\/a><\/a><\/p>\n\n\n\n

3. en.wikipedia.org <\/a><\/a><\/a><\/a><\/p>\n\n\n\n

In simpler terms, it’s the movement of water from an area of low solute concentration to an area of high solute concentration through a barrier that allows water to pass through but not the solute. \u00a0<\/a><\/p>\n\n\n\n

1. what is osmosis? (video) – Khan Academy <\/a><\/a><\/p>\n\n\n\n

Example:<\/strong> If you separate pure water from salt water with a semi-permeable membrane, water molecules will move from the pure water side to the salt water side to try to dilute the salt concentration. <\/p>\n\n<\/div>\n\t\t<\/div>\n\n

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Osmosis in GRP Hulls<\/p>\n\t\t\t

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Osmosis<\/strong> in the context of GRP (Glass Reinforced Plastic) hulls refers to the process where water molecules penetrate the laminate and accumulate within the material, causing blistering and delamination.<\/p>\n\n\n\n

The Process<\/h3>\n\n\n\n
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  1. Water Absorption:<\/strong> Water molecules, smaller than the resin molecules, can penetrate the GRP laminate, especially if there are voids or imperfections.<\/li>\n\n\n\n
  2. Salt Concentration:<\/strong> Seawater contains salts that act as solutes. The higher concentration of salts inside the hull compared to seawater creates a concentration gradient.<\/li>\n\n\n\n
  3. Water Migration:<\/strong> To equalize the concentration, water molecules move from the seawater into the GRP laminate.<\/li>\n\n\n\n
  4. Blister Formation:<\/strong> The trapped water forms blisters as it accumulates, causing the laminate to delaminate.<\/li>\n<\/ol>\n\n\n\n

    Opens in a new window<\/a>moisturemeters.com.au<\/a><\/p>\n\n\n\n

    Factors Affecting Osmosis:<\/h3>\n\n\n\n