title: Vibration analysis of cracked structures as a roving body passes a crack using the Rayleigh-Ritz Method

authors: Ilanko, Sinniah

subjects: cracked plate

abstract: The natural frequencies of a cracked plate with a roving mass were computed using the Rayleigh-Ritz Method for various sets of boundary condition. The obtained frequencies exhibit a sudden shift as a roving body crosses a crack. If the crack is only partial and continuity of translation is maintained, then the frequency shift occurs only when the body possesses a rotary inertia. If the crack is a complete one (through thickness) which permits differential translation to occur on either side of the crack, a particle having mass only (translatory inertia) is sufficient to cause a sudden shift. There is no need for a rotary inertia. This is potentially useful in detecting cracks in structures, as it is possible to track the changes in the natural frequencies of a structure as a test body such as a vehicle on a bridge moves and identify points where sudden frequency changes occur.

text: Vibration analysis of cracked structures as a roving body passes a crack using the Rayleigh-Ritz Method The natural frequencies of a cracked plate with a roving mass were computed using the Rayleigh-Ritz Method for various sets of boundary condition. The obtained frequencies exhibit a sudden shift as a roving body crosses a crack. If the crack is only partial and continuity of translation is maintained, then the frequency shift occurs only when the body possesses a rotary inertia. If the crack is a complete one (through thickness) which permits differential translation to occur on either side of the crack, a particle having mass only (translatory inertia) is sufficient to cause a sudden shift. There is no need for a rotary inertia. This is potentially useful in detecting cracks in structures, as it is possible to track the changes in the natural frequencies of a structure as a test body such as a vehicle on a bridge moves and identify points where sudden frequency changes occur.

year: 2018

title: Guest editorial by Sunita Basnet: Bhutanese refugee women and girls in NZ

authors: Basnet, Sunita

abstract: These former Bhutanese refugee women and girls were resettled in Christchurch, Nelson, Palmerston North and Auckland since 2008 under the New Zealand refugee quota. According to the UNHCR Nepal, as of 30th June 2016, 104,009 Bhutanese refugees from Nepal have been resettled in eight countries. New Zealand has resettled 1,009 making New Zealand the fourth largest hosting country. The interviews were conducted in Nepali, then have been translated to English.

text: Guest editorial by Sunita Basnet: Bhutanese refugee women and girls in NZ These former Bhutanese refugee women and girls were resettled in Christchurch, Nelson, Palmerston North and Auckland since 2008 under the New Zealand refugee quota. According to the UNHCR Nepal, as of 30th June 2016, 104,009 Bhutanese refugees from Nepal have been resettled in eight countries. New Zealand has resettled 1,009 making New Zealand the fourth largest hosting country. The interviews were conducted in Nepali, then have been translated to English.

year: 2016

title: Place-making: Wānanga based photographic approaches

authors: Hill, Rodrigo

subjects: photography

abstract: The words above are from the poem Māori King Tawhiao wrote expressing his love for his homelands of the Waikato and the region known today as the King Country. The words translate to: “I look down on the valley of Waikato, As though to hold it in the hollow of my hand.” Now imagine a large-scale photograph depicting a close-up frame of cupped hands trying to hold something carefully.

text: Place-making: Wānanga based photographic approaches The words above are from the poem Māori King Tawhiao wrote expressing his love for his homelands of the Waikato and the region known today as the King Country. The words translate to: “I look down on the valley of Waikato, As though to hold it in the hollow of my hand.” Now imagine a large-scale photograph depicting a close-up frame of cupped hands trying to hold something carefully.

year: 2022-12-31