{"id":644,"date":"2025-08-03T02:44:08","date_gmt":"2025-08-02T19:44:08","guid":{"rendered":"http:\/\/www.tneutron.net\/seni\/?p=644"},"modified":"2025-07-28T07:51:03","modified_gmt":"2025-07-28T00:51:03","slug":"pemeriksaan-kekerasan-kayu","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/seni\/pemeriksaan-kekerasan-kayu\/","title":{"rendered":"Pemeriksaan Kekerasan Kayu"},"content":{"rendered":"

Alat dan Bahan yang dibutuhkan :
\n– Mesin tekan
\n– Besi setengah bola baja dengan lekuk seluas 1 cm2 (\u00d8 1,13 cm)
\n– Mistar ukur
\n– Kayu ukuran 5 x 5 x 15 cm
\nCara Pemeriksaan :
\n– Siapkan benda uji dengan ukuran 5 x 5 x 15 cm
\n– Masukan benda uji pada mesin tekan
\n– Contoh uji tean dengan bola baja \u00d8 1,13 cm sampai bola masuk sedalam \u00bd x diameter
\n– Pengujian kekerasan dilakukan terhadap kedua bidang\/ujung dan keempat bidang sisi.
\n– Hitung beban dari pengujian bidang tersebut didapat angka kekerasan rata-rata dari ujung radial dan tangensial.
\n\"image\"<\/a><\/p>\n

a. Pemeriksaan Keteguhan Geser Kayu
\n<\/strong>Alat dan Bahan yang dibutuhkan :
\n– Mesin tekan dan perlengkapannya
\n– Gergaji
\n– Kayu ukuran 3 x 4 x 8 cm
\nCara Pemeriksaan :
\n– Siapkan benda uji seperti pada gambar
\n– Tempatkan benda uji pada penjepitnya diusahakan jangan sampai benda bidang geser secara kontinyu dengan kecepatan 0,6 mm\/menit
\n– Catat bebannya apabila kayu tergeser
\n– Hitung keteguhan geser sejajar serat kayu
\n\"image\"<\/a><\/p>\n

b. Pemeriksaan Keteguhan Belah sejajar Serat
\n<\/strong>Alat dan Bahan yang digunakan
\n– Mesin tarik dan perlengkpannya
\n– Bor \u00d8 2,5 cm
\n– Gergaji
\n– Mistar ukur
\n– Kayu ukuran 4 x 5 x 9,5 cm
\nCara Pemeriksaan :
\n– Siapkan benda uji seperti gambar
\n– Benda uji letakan pada mesin tarik
\n– Jalankan mesin tarik dengan kecepatan 2,5 mm per menit
\n– Hasilnya cacat p kg apabila bend uji terbelah<\/p>\n

c. Pemeriksaan Berat Jenis<\/strong>
\nAlat dan Bahan yang dibutuhkan :
\n– Oven
\n– Timbangan ketelitian 0,1 gram
\n– Gergaji
\n– Alat ukur\/meteran
\n– Kayu dengan ukuran 5 x 5 x 5 cm
\nCara Pemeriksaan :
\n– Siapkan benda uji dengan ukuran5 x 5 x 5 cm
\n– Penetapan berat jenis benda uji mempunyai kadarair 15 % dan kering udara
\n– Benda uji ditimbang misalnya (a gram)
\n– Volume diukur dengan metode celup
\n\uf0b7 Isi air pada gelas ukur (Xml)
\n\uf0b7 Benda uji direndam dahulu beberapa menit
\n\uf0b7 Masukan benda uji ke dalam gelas ukur yang berisi air
\n\uf0b7 Setelah benda uji masuk ke dalam gelas ukur, air akan naik menjadi (Y ml)
\n\uf0b7 Volume benda uji dapat dicari yaitu Y ml dikurangi X ml<\/p>\n

Hitung berat jenis kayu dengan rumus :
\n\"image\"<\/a><\/p>\n

\"image\"<\/a><\/p>\n

d. Pemeriksaan Penyusutan radial dan Tangensial<\/strong>
\nAlat dan Bahan yang dibutuhkan :
\n– Mistar sorong (sigmat)
\n– Gergaji
\n– Oven
\n– Kayu dengan ukuran 2,5 x 2,5 x 20 cm
\nCara Pemeriksaan
\n– Siapkan benda uji dengan ukuran 5 x 5 x 5 cm keadaan bersih
\n– Benda uji ditimbang misalnya A gram
\n– Benda uji dikeringkan dalam oven pada suhu 103 \u00b1 2\u00b0 C sampai berat konstan
\n– Setelah itu benda uji ditimbang misal B gram
\n– Presentase kadar air kayu dapat dihitung<\/p>\n","protected":false},"excerpt":{"rendered":"

Alat dan Bahan yang dibutuhkan : – Mesin tekan – Besi setengah bola baja dengan lekuk seluas 1 cm2 (\u00d8<\/p>\n","protected":false},"author":1,"featured_media":643,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[809],"tags":[920,916,917,918,923,924,922,919,925,921],"class_list":["post-644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pemeriksaan-bahan-kayu","tag-kekerasan-fosil-kayu","tag-kekerasan-kayu","tag-kekerasan-kayu-mahoni","tag-kekerasan-kayu-ulin","tag-kekerasan-pada-kayu","tag-rumus-kekerasan-kayu","tag-tabel-kekerasan-kayu","tag-tingkat-kekerasan-kayu","tag-tingkat-kekerasan-kayu-jabon","tag-uji-kekerasan-kayu"],"yoast_head":"\nPemeriksaan Kekerasan Kayu - TN Seni<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tneutron.net\/seni\/pemeriksaan-kekerasan-kayu\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Pemeriksaan Kekerasan Kayu - 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